157211718 has 16 divisors (see below), whose sum is σ = 316071936. Its totient is φ = 52129160.

The previous prime is 157211657. The next prime is 157211729. The reversal of 157211718 is 817112751.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67446 + ... + 69737.

It is an arithmetic number, because the mean of its divisors is an integer number (19754496).

Almost surely, 2^157211718 is an apocalyptic number.

157211718 is an abundant number, since it is smaller than the sum of its proper divisors (158860218).

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

157211718 is a wasteful number, since it uses less digits than its factorization.

157211718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137379.

The product of its digits is 3920, while the sum is 33.

The square root of 157211718 is about 12538.4097077739. The cubic root of 157211718 is about 539.7114576454.

The spelling of 157211718 in words is "one hundred fifty-seven million, two hundred eleven thousand, seven hundred eighteen".