1149859620 has 144 divisors (see below), whose sum is σ = 4292870400. Its totient is φ = 242604288.

The previous prime is 1149859567. The next prime is 1149859621. The reversal of 1149859620 is 269589411.

1149859620 is a `hidden beast` number, since 1 + 14 + 9 + 8 + 5 + 9 + 620 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1149859621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18720 + ... + 51479.

It is an arithmetic number, because the mean of its divisors is an integer number (29811600).

Almost surely, 2^1149859620 is an apocalyptic number.

1149859620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1149859620 is an abundant number, since it is smaller than the sum of its proper divisors (3143010780).

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

1149859620 is a wasteful number, since it uses less digits than its factorization.

1149859620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70234 (or 70229 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 1149859620 is about 33909.5800622774. The cubic root of 1149859620 is about 1047.6469211008.

The spelling of 1149859620 in words is "one billion, one hundred forty-nine million, eight hundred fifty-nine thousand, six hundred twenty".