1147371840 has 84 divisors (see below), whose sum is σ = 3946490964. Its totient is φ = 305965056.

The previous prime is 1147371793. The next prime is 1147371847. The reversal of 1147371840 is 481737411.

1147371840 is a `hidden beast` number, since 1 + 1 + 473 + 7 + 184 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 511121664 + 636250176 = 22608^2 + 25224^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1147371795 and 1147371804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147371847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196317 + ... + 202076.

Almost surely, 2^1147371840 is an apocalyptic number.

1147371840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1147371840 is an abundant number, since it is smaller than the sum of its proper divisors (2799119124).

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

1147371840 is a wasteful number, since it uses less digits than its factorization.

1147371840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398416 (or 398403 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 1147371840 is about 33872.8776456917. The cubic root of 1147371840 is about 1046.8908296886.

The spelling of 1147371840 in words is "one billion, one hundred forty-seven million, three hundred seventy-one thousand, eight hundred forty".