157802001049 has 75 divisors (see below), whose sum is σ = 205566748485. Its totient is φ = 121127335560.

The previous prime is 157802001023. The next prime is 157802001103. The reversal of 157802001049 is 940100208751.

The square root of 157802001049 is 397243.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 157802001049 - 2¹³ = 157801992857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157802000999 and 157802001017.

It is not an unprimeable number, because it can be changed into a prime (157802001349) by changing a digit.

It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 2355253714 + ... + 2355253780.

Almost surely, 2^157802001049 is an apocalyptic number.

157802001049 is the 397243-rd square number.

157802001049 is the 198622-nd centered octagonal number.

It is an amenable number.

157802001049 is a deficient number, since it is larger than the sum of its proper divisors (47764747436).

157802001049 is an frugal number, since it uses more digits than its factorization.

157802001049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 157802001049 in words is "one hundred fifty-seven billion, eight hundred two million, one thousand, forty-nine".