1492156665 has 48 divisors (see below), whose sum is σ = 2689255296. Its totient is φ = 764755200.

The previous prime is 1492156651. The next prime is 1492156667. The reversal of 1492156665 is 5666512941.

It is not a de Polignac number, because 1492156665 - 2¹⁰ = 1492155641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1492156665.

It is not an unprimeable number, because it can be changed into a prime (1492156667) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 117580 + ... + 129650.

It is an arithmetic number, because the mean of its divisors is an integer number (56026152).

Almost surely, 2^1492156665 is an apocalyptic number.

1492156665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1492156665 is a deficient number, since it is larger than the sum of its proper divisors (1197098631).

1492156665 is a wasteful number, since it uses less digits than its factorization.

1492156665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12190 (or 12187 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 1492156665 is about 38628.4437299770. The cubic root of 1492156665 is about 1142.7155599123.

The spelling of 1492156665 in words is "one billion, four hundred ninety-two million, one hundred fifty-six thousand, six hundred sixty-five".