1151662320 has 80 divisors (see below), whose sum is σ = 3966844320. Its totient is φ = 307109376.

The previous prime is 1151662277. The next prime is 1151662321. The reversal of 1151662320 is 232661511.

1151662320 is a `hidden beast` number, since 1 + 1 + 5 + 16 + 623 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151662321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264429 + ... + 268748.

It is an arithmetic number, because the mean of its divisors is an integer number (49585554).

Almost surely, 2^1151662320 is an apocalyptic number.

1151662320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151662320 is an abundant number, since it is smaller than the sum of its proper divisors (2815182000).

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

1151662320 is a wasteful number, since it uses less digits than its factorization.

1151662320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533199 (or 533187 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1151662320 is about 33936.1506361579. The cubic root of 1151662320 is about 1048.1941203644.

The spelling of 1151662320 in words is "one billion, one hundred fifty-one million, six hundred sixty-two thousand, three hundred twenty".