1136661240 has 128 divisors (see below), whose sum is σ = 4006195200. Its totient is φ = 254353920.

The previous prime is 1136661233. The next prime is 1136661247. The reversal of 1136661240 is 421666311.

It is an interprime number because it is at equal distance from previous prime (1136661233) and next prime (1136661247).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1136661198 and 1136661207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1136661247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15960 + ... + 50279.

It is an arithmetic number, because the mean of its divisors is an integer number (31298400).

Almost surely, 2^1136661240 is an apocalyptic number.

1136661240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1136661240 is an abundant number, since it is smaller than the sum of its proper divisors (2869533960).

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

1136661240 is a wasteful number, since it uses less digits than its factorization.

1136661240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66277 (or 66273 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1136661240 is about 33714.4070094670. The cubic root of 1136661240 is about 1043.6231005438.

The spelling of 1136661240 in words is "one billion, one hundred thirty-six million, six hundred sixty-one thousand, two hundred forty".