1151501665 has 16 divisors (see below), whose sum is σ = 1427567616. Its totient is φ = 890740800.

The previous prime is 1151501657. The next prime is 1151501683. The reversal of 1151501665 is 5661051511.

It is not a de Polignac number, because 1151501665 - 2³ = 1151501657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248964 + ... + 253546.

It is an arithmetic number, because the mean of its divisors is an integer number (89222976).

Almost surely, 2^1151501665 is an apocalyptic number.

It is an amenable number.

1151501665 is a deficient number, since it is larger than the sum of its proper divisors (276065951).

1151501665 is a wasteful number, since it uses less digits than its factorization.

1151501665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6240.

The product of its (nonzero) digits is 4500, while the sum is 31.

The square root of 1151501665 is about 33933.7835349965. The cubic root of 1151501665 is about 1048.1453776458.

The spelling of 1151501665 in words is "one billion, one hundred fifty-one million, five hundred one thousand, six hundred sixty-five".