1522257198 has 48 divisors (see below), whose sum is σ = 3824526720. Its totient is φ = 395390160.

The previous prime is 1522257173. The next prime is 1522257211. The reversal of 1522257198 is 8917522251.

It is a super-2 number, since 2×1522257198² = 4634533953725622408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144688 + ... + 154851.

It is an arithmetic number, because the mean of its divisors is an integer number (79677640).

Almost surely, 2^1522257198 is an apocalyptic number.

1522257198 is an abundant number, since it is smaller than the sum of its proper divisors (2302269522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1522257198 is a wasteful number, since it uses less digits than its factorization.

1522257198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299573 (or 299562 counting only the distinct ones).

The product of its digits is 100800, while the sum is 42.

The square root of 1522257198 is about 39016.1145938444. The cubic root of 1522257198 is about 1150.3482746035.

The spelling of 1522257198 in words is "one billion, five hundred twenty-two million, two hundred fifty-seven thousand, one hundred ninety-eight".