1147489902 has 80 divisors (see below), whose sum is σ = 2931988752. Its totient is φ = 332294400.

The previous prime is 1147489867. The next prime is 1147489927. The reversal of 1147489902 is 2099847411.

It is a happy number.

1147489902 is a `hidden beast` number, since 11 + 474 + 89 + 90 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19777 + ... + 51827.

Almost surely, 2^1147489902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1147489902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1465994376).

1147489902 is an abundant number, since it is smaller than the sum of its proper divisors (1784498850).

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

1147489902 is a wasteful number, since it uses less digits than its factorization.

1147489902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32095 (or 32086 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 1147489902 is about 33874.6203225955. The cubic root of 1147489902 is about 1046.9267360332.

The spelling of 1147489902 in words is "one billion, one hundred forty-seven million, four hundred eighty-nine thousand, nine hundred two".