1140663655 has 8 divisors (see below), whose sum is σ = 1369495152. Its totient is φ = 912065088.

The previous prime is 1140663653. The next prime is 1140663691. The reversal of 1140663655 is 5563660411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1140663655 - 2¹ = 1140663653 is a prime.

It is a super-2 number, since 2×1140663655² = 2602227147675918050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140663653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47269 + ... + 67198.

It is an arithmetic number, because the mean of its divisors is an integer number (171186894).

Almost surely, 2^1140663655 is an apocalyptic number.

1140663655 is a deficient number, since it is larger than the sum of its proper divisors (228831497).

1140663655 is a wasteful number, since it uses less digits than its factorization.

1140663655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116465.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 1140663655 is about 33773.7124847121. The cubic root of 1140663655 is about 1044.8466018739.

The spelling of 1140663655 in words is "one billion, one hundred forty million, six hundred sixty-three thousand, six hundred fifty-five".