1651166505 has 32 divisors (see below), whose sum is σ = 2990805120. Its totient is φ = 864002880.

The previous prime is 1651166479. The next prime is 1651166563. The reversal of 1651166505 is 5056611561.

It is not a de Polignac number, because 1651166505 - 2⁶ = 1651166441 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1651166505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108231 + ... + 122540.

It is an arithmetic number, because the mean of its divisors is an integer number (93462660).

Almost surely, 2^1651166505 is an apocalyptic number.

1651166505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1651166505 is a deficient number, since it is larger than the sum of its proper divisors (1339638615).

1651166505 is a wasteful number, since it uses less digits than its factorization.

1651166505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230838 (or 230832 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 1651166505 is about 40634.5481702455. The cubic root of 1651166505 is about 1181.9441533562.

The spelling of 1651166505 in words is "one billion, six hundred fifty-one million, one hundred sixty-six thousand, five hundred five".