641357157 has 8 divisors (see below), whose sum is σ = 977306176. Its totient is φ = 366489792.

The previous prime is 641357107. The next prime is 641357173. The reversal of 641357157 is 751753146.

641357157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 641357157 - 2¹² = 641353061 is a prime.

It is a super-2 number, since 2×641357157² = 822678005670245298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641357107) 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, 15270388 + ... + 15270429.

It is an arithmetic number, because the mean of its divisors is an integer number (122163272).

Almost surely, 2^641357157 is an apocalyptic number.

It is an amenable number.

641357157 is a deficient number, since it is larger than the sum of its proper divisors (335949019).

641357157 is a wasteful number, since it uses less digits than its factorization.

641357157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30540827.

The product of its digits is 88200, while the sum is 39.

The square root of 641357157 is about 25325.0302467736. The cubic root of 641357157 is about 862.3825930505.

The spelling of 641357157 in words is "six hundred forty-one million, three hundred fifty-seven thousand, one hundred fifty-seven".