157984869 has 24 divisors (see below), whose sum is σ = 248505408. Its totient is φ = 88999680.

The previous prime is 157984843. The next prime is 157984877. The reversal of 157984869 is 968489751.

It is not a de Polignac number, because 157984869 - 2¹¹ = 157982821 is a prime.

It is a super-2 number, since 2×157984869² = 49918437665894322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157984469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2869 + ... + 18005.

It is an arithmetic number, because the mean of its divisors is an integer number (10354392).

Almost surely, 2^157984869 is an apocalyptic number.

It is an amenable number.

157984869 is a deficient number, since it is larger than the sum of its proper divisors (90520539).

157984869 is a wasteful number, since it uses less digits than its factorization.

157984869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15225 (or 15218 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 57.

The square root of 157984869 is about 12569.2031967026. The cubic root of 157984869 is about 540.5947596392.

The spelling of 157984869 in words is "one hundred fifty-seven million, nine hundred eighty-four thousand, eight hundred sixty-nine".