1163645740 has 48 divisors (see below), whose sum is σ = 2542845312. Its totient is φ = 446940416.

The previous prime is 1163645683. The next prime is 1163645759. The reversal of 1163645740 is 475463611.

It is a self number, because there is not a number n which added to its sum of digits gives 1163645740.

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, 38142 + ... + 61498.

It is an arithmetic number, because the mean of its divisors is an integer number (52975944).

Almost surely, 2^1163645740 is an apocalyptic number.

1163645740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1163645740 is an abundant number, since it is smaller than the sum of its proper divisors (1379199572).

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

1163645740 is a wasteful number, since it uses less digits than its factorization.

1163645740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23466 (or 23464 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 1163645740 is about 34112.2520511326. The cubic root of 1163645740 is about 1051.8171828318.

The spelling of 1163645740 in words is "one billion, one hundred sixty-three million, six hundred forty-five thousand, seven hundred forty".