1651157066 has 8 divisors (see below), whose sum is σ = 2667253764. Its totient is φ = 762072480.

The previous prime is 1651157033. The next prime is 1651157069. The reversal of 1651157066 is 6607511561.

It can be written as a sum of positive squares in 2 ways, for example, as 1324596025 + 326561041 = 36395^2 + 18071^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1651157069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31752995 + ... + 31753046.

Almost surely, 2^1651157066 is an apocalyptic number.

1651157066 is a deficient number, since it is larger than the sum of its proper divisors (1016096698).

1651157066 is a wasteful number, since it uses less digits than its factorization.

1651157066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63506056.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 1651157066 is about 40634.4320250696. The cubic root of 1651157066 is about 1181.9419011318.

The spelling of 1651157066 in words is "one billion, six hundred fifty-one million, one hundred fifty-seven thousand, sixty-six".