1149787656 has 192 divisors, whose sum is σ = 3443803200. Its totient is φ = 355332096.

The previous prime is 1149787643. The next prime is 1149787669. The reversal of 1149787656 is 6567879411.

1149787656 is a `hidden beast` number, since 11 + 497 + 87 + 65 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (1149787643) and next prime (1149787669).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7053831 + ... + 7053993.

It is an arithmetic number, because the mean of its divisors is an integer number (17936475).

Almost surely, 2^1149787656 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 1149787656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1721901600).

1149787656 is an abundant number, since it is smaller than the sum of its proper divisors (2294015544).

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

1149787656 is a wasteful number, since it uses less digits than its factorization.

1149787656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 298 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 1149787656 is about 33908.5189296141. The cubic root of 1149787656 is about 1047.6250649732.

The spelling of 1149787656 in words is "one billion, one hundred forty-nine million, seven hundred eighty-seven thousand, six hundred fifty-six".