1257226198 has 16 divisors (see below), whose sum is σ = 1897063344. Its totient is φ = 624879360.

The previous prime is 1257226189. The next prime is 1257226231. The reversal of 1257226198 is 8916227521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546186 + ... + 548482.

It is an arithmetic number, because the mean of its divisors is an integer number (118566459).

Almost surely, 2^1257226198 is an apocalyptic number.

1257226198 is a deficient number, since it is larger than the sum of its proper divisors (639837146).

1257226198 is a wasteful number, since it uses less digits than its factorization.

1257226198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3807.

The product of its digits is 120960, while the sum is 43.

The square root of 1257226198 is about 35457.3856622284. The cubic root of 1257226198 is about 1079.2891406948.

The spelling of 1257226198 in words is "one billion, two hundred fifty-seven million, two hundred twenty-six thousand, one hundred ninety-eight".