1052923691 has 4 divisors (see below), whose sum is σ = 1053035712. Its totient is φ = 1052811672.

The previous prime is 1052923661. The next prime is 1052923709. The reversal of 1052923691 is 1963292501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1963292501 = 293 ⋅6700657.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1052923691 is a prime.

It is a super-2 number, since 2×1052923691² = 2217296598138126962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1052923661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40475 + ... + 61188.

It is an arithmetic number, because the mean of its divisors is an integer number (263258928).

Almost surely, 2^1052923691 is an apocalyptic number.

1052923691 is a deficient number, since it is larger than the sum of its proper divisors (112021).

1052923691 is a wasteful number, since it uses less digits than its factorization.

1052923691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112020.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 1052923691 is about 32448.7856629489. The cubic root of 1052923691 is about 1017.3388568164.

The spelling of 1052923691 in words is "one billion, fifty-two million, nine hundred twenty-three thousand, six hundred ninety-one".