1949355101 has 8 divisors (see below), whose sum is σ = 2034863064. Its totient is φ = 1865574720.

The previous prime is 1949355049. The next prime is 1949355119. The reversal of 1949355101 is 1015539491.

It can be written as a sum of positive squares in 4 ways, for example, as 56235001 + 1893120100 = 7499^2 + 43510^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1949355101 - 2¹⁴ = 1949338717 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 (1949355301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429590 + ... + 434103.

It is an arithmetic number, because the mean of its divisors is an integer number (254357883).

Almost surely, 2^1949355101 is an apocalyptic number.

It is an amenable number.

1949355101 is a deficient number, since it is larger than the sum of its proper divisors (85507963).

1949355101 is an equidigital number, since it uses as much as digits as its factorization.

1949355101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863791.

The product of its (nonzero) digits is 24300, while the sum is 38.

The square root of 1949355101 is about 44151.5016845407. The cubic root of 1949355101 is about 1249.1952368762.

The spelling of 1949355101 in words is "one billion, nine hundred forty-nine million, three hundred fifty-five thousand, one hundred one".