1655738923 has 8 divisors (see below), whose sum is σ = 1709788160. Its totient is φ = 1601729640.

The previous prime is 1655738899. The next prime is 1655738933. The reversal of 1655738923 is 3298375561.

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 1655738923 - 2¹³ = 1655730731 is a prime.

It is a super-2 number, since 2×1655738923² = 5482942762274399858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1655738933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90418 + ... + 107176.

It is an arithmetic number, because the mean of its divisors is an integer number (213723520).

Almost surely, 2^1655738923 is an apocalyptic number.

1655738923 is a deficient number, since it is larger than the sum of its proper divisors (54049237).

1655738923 is a wasteful number, since it uses less digits than its factorization.

1655738923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19977.

The product of its digits is 1360800, while the sum is 49.

The square root of 1655738923 is about 40690.7719636775. The cubic root of 1655738923 is about 1183.0341629118.

The spelling of 1655738923 in words is "one billion, six hundred fifty-five million, seven hundred thirty-eight thousand, nine hundred twenty-three".