1501157668 has 12 divisors (see below), whose sum is σ = 2632294000. Its totient is φ = 749073672.

The previous prime is 1501157663. The next prime is 1501157699. The reversal of 1501157668 is 8667511051.

It is a self number, because there is not a number n which added to its sum of digits gives 1501157668.

It is not an unprimeable number, because it can be changed into a prime (1501157663) 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, 374046 + ... + 378037.

Almost surely, 2^1501157668 is an apocalyptic number.

It is an amenable number.

1501157668 is a deficient number, since it is larger than the sum of its proper divisors (1131136332).

1501157668 is a wasteful number, since it uses less digits than its factorization.

1501157668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752586 (or 752584 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 1501157668 is about 38744.7760091603. The cubic root of 1501157668 is about 1145.0086555030.

The spelling of 1501157668 in words is "one billion, five hundred one million, one hundred fifty-seven thousand, six hundred sixty-eight".