1151901864 has 64 divisors (see below), whose sum is σ = 3224232000. Its totient is φ = 381026880.

The previous prime is 1151901853. The next prime is 1151901911. The reversal of 1151901864 is 4681091511.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7942 + ... + 48650.

It is an arithmetic number, because the mean of its divisors is an integer number (50378625).

Almost surely, 2^1151901864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1151901864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1612116000).

1151901864 is an abundant number, since it is smaller than the sum of its proper divisors (2072330136).

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

1151901864 is a wasteful number, since it uses less digits than its factorization.

1151901864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40855 (or 40845 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 36.

The square root of 1151901864 is about 33939.6797863504. The cubic root of 1151901864 is about 1048.2667895839.

The spelling of 1151901864 in words is "one billion, one hundred fifty-one million, nine hundred one thousand, eight hundred sixty-four".