207157389 has 8 divisors (see below), whose sum is σ = 288219072. Its totient is φ = 132100320.

The previous prime is 207157387. The next prime is 207157397. The reversal of 207157389 is 983751702.

207157389 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 207157389 - 2¹ = 207157387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 207157389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207157387) 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, 1501072 + ... + 1501209.

It is an arithmetic number, because the mean of its divisors is an integer number (36027384).

Almost surely, 2^207157389 is an apocalyptic number.

It is an amenable number.

207157389 is a deficient number, since it is larger than the sum of its proper divisors (81061683).

207157389 is a wasteful number, since it uses less digits than its factorization.

207157389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3002307.

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 207157389 is about 14392.9631764970. The cubic root of 207157389 is about 591.6980565859.

The spelling of 207157389 in words is "two hundred seven million, one hundred fifty-seven thousand, three hundred eighty-nine".