1948902553 has 4 divisors (see below), whose sum is σ = 2098818148. Its totient is φ = 1798986960.

The previous prime is 1948902469. The next prime is 1948902577. The reversal of 1948902553 is 3552098491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3552098491 = 89 ⋅39911219.

It can be written as a sum of positive squares in 2 ways, for example, as 692058249 + 1256844304 = 26307^2 + 35452^2 .

It is a cyclic number.

It is not a de Polignac number, because 1948902553 - 2²⁹ = 1412031641 is a prime.

It is a super-2 number, since 2×1948902553² = 7596442322179835618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1948908553) 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, 74957778 + ... + 74957803.

It is an arithmetic number, because the mean of its divisors is an integer number (524704537).

Almost surely, 2^1948902553 is an apocalyptic number.

1948902553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1948902553 is a deficient number, since it is larger than the sum of its proper divisors (149915595).

1948902553 is a wasteful number, since it uses less digits than its factorization.

1948902553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149915594.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 1948902553 is about 44146.3764424669. The cubic root of 1948902553 is about 1249.0985613897.

The spelling of 1948902553 in words is "one billion, nine hundred forty-eight million, nine hundred two thousand, five hundred fifty-three".