157984454 has 4 divisors (see below), whose sum is σ = 236976684. Its totient is φ = 78992226.

The previous prime is 157984433. The next prime is 157984469. The reversal of 157984454 is 454489751.

It is a happy number.

157984454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 157984399 and 157984408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39496112 + ... + 39496115.

It is an arithmetic number, because the mean of its divisors is an integer number (59244171).

Almost surely, 2^157984454 is an apocalyptic number.

157984454 is a deficient number, since it is larger than the sum of its proper divisors (78992230).

157984454 is an equidigital number, since it uses as much as digits as its factorization.

157984454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78992229.

The product of its digits is 806400, while the sum is 47.

The square root of 157984454 is about 12569.1866880877. The cubic root of 157984454 is about 540.5942862879.

The spelling of 157984454 in words is "one hundred fifty-seven million, nine hundred eighty-four thousand, four hundred fifty-four".