1091379375 has 60 divisors (see below), whose sum is σ = 1980322344. Its totient is φ = 579000000.

The previous prime is 1091379353. The next prime is 1091379389. The reversal of 1091379375 is 5739731901.

It is not a de Polignac number, because 1091379375 - 2⁸ = 1091379119 is a prime.

It is a super-2 number, since 2×1091379375² = 2382217880350781250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1091379375.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1411489 + ... + 1412261.

Almost surely, 2^1091379375 is an apocalyptic number.

1091379375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1091379375 is a deficient number, since it is larger than the sum of its proper divisors (888942969).

1091379375 is an equidigital number, since it uses as much as digits as its factorization.

1091379375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050 (or 1032 counting only the distinct ones).

The product of its (nonzero) digits is 178605, while the sum is 45.

The square root of 1091379375 is about 33036.0314656588. The cubic root of 1091379375 is about 1029.5764038791.

The spelling of 1091379375 in words is "one billion, ninety-one million, three hundred seventy-nine thousand, three hundred seventy-five".