1145156664 has 32 divisors (see below), whose sum is σ = 2872235520. Its totient is φ = 380473056.

The previous prime is 1145156659. The next prime is 1145156671. The reversal of 1145156664 is 4666515411.

It is a happy number.

It is a super-2 number, since 2×1145156664² = 2622767570207217792, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 70344 + ... + 85079.

It is an arithmetic number, because the mean of its divisors is an integer number (89757360).

Almost surely, 2^1145156664 is an apocalyptic number.

It is an amenable number.

1145156664 is an abundant number, since it is smaller than the sum of its proper divisors (1727078856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1145156664 is a wasteful number, since it uses less digits than its factorization.

1145156664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155739 (or 155735 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The square root of 1145156664 is about 33840.1634747824. The cubic root of 1145156664 is about 1046.2166682740.

The spelling of 1145156664 in words is "one billion, one hundred forty-five million, one hundred fifty-six thousand, six hundred sixty-four".