1357187998 has 8 divisors (see below), whose sum is σ = 2101452480. Its totient is φ = 656703840.

The previous prime is 1357187989. The next prime is 1357187999. The reversal of 1357187998 is 8997817531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1357187999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10945003 + ... + 10945126.

It is an arithmetic number, because the mean of its divisors is an integer number (262681560).

Almost surely, 2^1357187998 is an apocalyptic number.

1357187998 is a deficient number, since it is larger than the sum of its proper divisors (744264482).

1357187998 is a wasteful number, since it uses less digits than its factorization.

1357187998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21890162.

The product of its digits is 3810240, while the sum is 58.

The square root of 1357187998 is about 36840.0325461311. The cubic root of 1357187998 is about 1107.1675200405.

The spelling of 1357187998 in words is "one billion, three hundred fifty-seven million, one hundred eighty-seven thousand, nine hundred ninety-eight".