1397117554 has 32 divisors (see below), whose sum is σ = 2416435200. Its totient is φ = 593444880.

The previous prime is 1397117551. The next prime is 1397117573. The reversal of 1397117554 is 4557117931.

It is a self number, because there is not a number n which added to its sum of digits gives 1397117554.

It is not an unprimeable number, because it can be changed into a prime (1397117551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 949039 + ... + 950509.

It is an arithmetic number, because the mean of its divisors is an integer number (75513600).

Almost surely, 2^1397117554 is an apocalyptic number.

1397117554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1397117554 is a deficient number, since it is larger than the sum of its proper divisors (1019317646).

1397117554 is a wasteful number, since it uses less digits than its factorization.

1397117554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038.

The product of its digits is 132300, while the sum is 43.

The square root of 1397117554 is about 37378.0357161796. The cubic root of 1397117554 is about 1117.9206620799.

The spelling of 1397117554 in words is "one billion, three hundred ninety-seven million, one hundred seventeen thousand, five hundred fifty-four".