1118157601 has 4 divisors (see below), whose sum is σ = 1219808304. Its totient is φ = 1016506900.

The previous prime is 1118157583. The next prime is 1118157613. The reversal of 1118157601 is 1067518111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1118157601 - 2²⁹ = 581286689 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1118157671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50825335 + ... + 50825356.

It is an arithmetic number, because the mean of its divisors is an integer number (304952076).

Almost surely, 2^1118157601 is an apocalyptic number.

1118157601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1118157601 is a deficient number, since it is larger than the sum of its proper divisors (101650703).

1118157601 is a wasteful number, since it uses less digits than its factorization.

1118157601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101650702.

The product of its (nonzero) digits is 1680, while the sum is 31.

The square root of 1118157601 is about 33438.8636320076. The cubic root of 1118157601 is about 1037.9290646293.

The spelling of 1118157601 in words is "one billion, one hundred eighteen million, one hundred fifty-seven thousand, six hundred one".