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2038995397 = 7572693521
BaseRepresentation
bin111100110001000…
…1001100111000101
312021002201200212001
41321202021213011
513133440323042
6534154425301
7101346113665
oct17142114705
95232650761
102038995397
11956a6146a
1248aa32231
1326657b86a
14154b2a1a5
15be016bb7
hex798899c5

2038995397 has 4 divisors (see below), whose sum is σ = 2041689676. Its totient is φ = 2036301120.

The previous prime is 2038995377. The next prime is 2038995443. The reversal of 2038995397 is 7935998302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7935998302 = 23967999151.

It can be written as a sum of positive squares in 2 ways, for example, as 389904516 + 1649090881 = 19746^2 + 40609^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2038995397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2038995377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1346004 + ... + 1347517.

It is an arithmetic number, because the mean of its divisors is an integer number (510422419).

Almost surely, 22038995397 is an apocalyptic number.

It is an amenable number.

2038995397 is a deficient number, since it is larger than the sum of its proper divisors (2694279).

2038995397 is an equidigital number, since it uses as much as digits as its factorization.

2038995397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2694278.

The product of its (nonzero) digits is 3674160, while the sum is 55.

The square root of 2038995397 is about 45155.2366509135. The cubic root of 2038995397 is about 1268.0569201345.

The spelling of 2038995397 in words is "two billion, thirty-eight million, nine hundred ninety-five thousand, three hundred ninety-seven".

Divisors: 1 757 2693521 2038995397