4636633157 has 4 divisors (see below), whose sum is σ = 4993297260. Its totient is φ = 4279969056.

The previous prime is 4636633123. The next prime is 4636633189. The reversal of 4636633157 is 7513366364.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 290395681 + 4346237476 = 17041^2 + 65926^2 .

It is a cyclic number.

It is not a de Polignac number, because 4636633157 - 2³⁰ = 3562891333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4636533157) 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, 178332032 + ... + 178332057.

It is an arithmetic number, because the mean of its divisors is an integer number (1248324315).

Almost surely, 2^4636633157 is an apocalyptic number.

It is an amenable number.

4636633157 is a deficient number, since it is larger than the sum of its proper divisors (356664103).

4636633157 is a wasteful number, since it uses less digits than its factorization.

4636633157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356664102.

The product of its digits is 816480, while the sum is 44.

The square root of 4636633157 is about 68092.8275004057. The cubic root of 4636633157 is about 1667.5066665201.

The spelling of 4636633157 in words is "four billion, six hundred thirty-six million, six hundred thirty-three thousand, one hundred fifty-seven".