1129651620 has 48 divisors (see below), whose sum is σ = 3168388608. Its totient is φ = 300729600.

The previous prime is 1129651613. The next prime is 1129651643. The reversal of 1129651620 is 261569211.

It is a super-2 number, since 2×1129651620² = 2552225565137248800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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, 20397 + ... + 51723.

It is an arithmetic number, because the mean of its divisors is an integer number (66008096).

Almost surely, 2^1129651620 is an apocalyptic number.

1129651620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1129651620 is an abundant number, since it is smaller than the sum of its proper divisors (2038736988).

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

1129651620 is a wasteful number, since it uses less digits than its factorization.

1129651620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31940 (or 31938 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 1129651620 is about 33610.2903885105. The cubic root of 1129651620 is about 1041.4733862476.

The spelling of 1129651620 in words is "one billion, one hundred twenty-nine million, six hundred fifty-one thousand, six hundred twenty".