19700157 has 8 divisors (see below), whose sum is σ = 26637120. Its totient is φ = 12948320.

The previous prime is 19700147. The next prime is 19700171. The reversal of 19700157 is 75100791.

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 19700157 - 2⁴ = 19700141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19700137) 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, 46032 + ... + 46457.

It is an arithmetic number, because the mean of its divisors is an integer number (3329640).

Almost surely, 2^19700157 is an apocalyptic number.

It is an amenable number.

19700157 is a deficient number, since it is larger than the sum of its proper divisors (6936963).

19700157 is an equidigital number, since it uses as much as digits as its factorization.

19700157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92563.

The product of its (nonzero) digits is 2205, while the sum is 30.

The square root of 19700157 is about 4438.4858904811. The cubic root of 19700157 is about 270.0784271484.

The spelling of 19700157 in words is "nineteen million, seven hundred thousand, one hundred fifty-seven".