1651121675 has 12 divisors (see below), whose sum is σ = 2339875536. Its totient is φ = 1132197600.

The previous prime is 1651121663. The next prime is 1651121711. The reversal of 1651121675 is 5761211561.

It is not a de Polignac number, because 1651121675 - 2¹⁰ = 1651120651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4717316 + ... + 4717665.

It is an arithmetic number, because the mean of its divisors is an integer number (194989628).

Almost surely, 2^1651121675 is an apocalyptic number.

1651121675 is a deficient number, since it is larger than the sum of its proper divisors (688753861).

1651121675 is an equidigital number, since it uses as much as digits as its factorization.

1651121675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9434998 (or 9434993 counting only the distinct ones).

The product of its digits is 12600, while the sum is 35.

The square root of 1651121675 is about 40633.9965423043. The cubic root of 1651121675 is about 1181.9334564669.

The spelling of 1651121675 in words is "one billion, six hundred fifty-one million, one hundred twenty-one thousand, six hundred seventy-five".