1398345670 has 16 divisors (see below), whose sum is σ = 2517454800. Its totient is φ = 559242144.

The previous prime is 1398345667. The next prime is 1398345671. The reversal of 1398345670 is 765438931.

It is a super-2 number, since 2×1398345670² = 3910741225615497800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1398345670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398345671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91756 + ... + 105904.

It is an arithmetic number, because the mean of its divisors is an integer number (157340925).

Almost surely, 2^1398345670 is an apocalyptic number.

1398345670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1398345670 is a deficient number, since it is larger than the sum of its proper divisors (1119109130).

1398345670 is a wasteful number, since it uses less digits than its factorization.

1398345670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24039.

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 1398345670 is about 37394.4604186235. The cubic root of 1398345670 is about 1118.2481301486.

The spelling of 1398345670 in words is "one billion, three hundred ninety-eight million, three hundred forty-five thousand, six hundred seventy".