1147912689 has 16 divisors (see below), whose sum is σ = 1908218880. Its totient is φ = 596318160.

The previous prime is 1147912687. The next prime is 1147912697. The reversal of 1147912689 is 9862197411.

It is not a de Polignac number, because 1147912689 - 2¹ = 1147912687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1147912687) 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, 2484429 + ... + 2484890.

It is an arithmetic number, because the mean of its divisors is an integer number (119263680).

Almost surely, 2^1147912689 is an apocalyptic number.

It is an amenable number.

1147912689 is a deficient number, since it is larger than the sum of its proper divisors (760306191).

1147912689 is a wasteful number, since it uses less digits than its factorization.

1147912689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4969340.

The product of its digits is 217728, while the sum is 48.

The square root of 1147912689 is about 33880.8602163522. The cubic root of 1147912689 is about 1047.0552985775.

The spelling of 1147912689 in words is "one billion, one hundred forty-seven million, nine hundred twelve thousand, six hundred eighty-nine".