1398975845 has 16 divisors (see below), whose sum is σ = 1728864000. Its totient is φ = 1086266688.

The previous prime is 1398975827. The next prime is 1398975857. The reversal of 1398975845 is 5485798931.

It is a cyclic number.

It is not a de Polignac number, because 1398975845 - 2¹⁰ = 1398974821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6710 + ... + 53319.

It is an arithmetic number, because the mean of its divisors is an integer number (108054000).

Almost surely, 2^1398975845 is an apocalyptic number.

It is an amenable number.

1398975845 is a deficient number, since it is larger than the sum of its proper divisors (329888155).

1398975845 is an equidigital number, since it uses as much as digits as its factorization.

1398975845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60172.

The product of its digits is 10886400, while the sum is 59.

The square root of 1398975845 is about 37402.8855170293. The cubic root of 1398975845 is about 1118.4160872327.

The spelling of 1398975845 in words is "one billion, three hundred ninety-eight million, nine hundred seventy-five thousand, eight hundred forty-five".