1077652891 has 4 divisors (see below), whose sum is σ = 1231603312. Its totient is φ = 923702472.

The previous prime is 1077652883. The next prime is 1077652903. The reversal of 1077652891 is 1982567701.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1982567701 = 4493 ⋅441257.

It is not a de Polignac number, because 1077652891 - 2³ = 1077652883 is a prime.

It is a super-2 number, since 2×1077652891² = 2322671506961315762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1077652841) 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, 76975200 + ... + 76975213.

It is an arithmetic number, because the mean of its divisors is an integer number (307900828).

Almost surely, 2^1077652891 is an apocalyptic number.

1077652891 is a deficient number, since it is larger than the sum of its proper divisors (153950421).

1077652891 is an equidigital number, since it uses as much as digits as its factorization.

1077652891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153950420.

The product of its (nonzero) digits is 211680, while the sum is 46.

The square root of 1077652891 is about 32827.6239012208. The cubic root of 1077652891 is about 1025.2417882107.

The spelling of 1077652891 in words is "one billion, seventy-seven million, six hundred fifty-two thousand, eight hundred ninety-one".