1375505898 has 64 divisors (see below), whose sum is σ = 3066470400. Its totient is φ = 408473280.

The previous prime is 1375505851. The next prime is 1375505927. The reversal of 1375505898 is 8985055731.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1375505898.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1496283 + ... + 1497201.

It is an arithmetic number, because the mean of its divisors is an integer number (47913600).

Almost surely, 2^1375505898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1375505898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1533235200).

1375505898 is an abundant number, since it is smaller than the sum of its proper divisors (1690964502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1375505898 is a wasteful number, since it uses less digits than its factorization.

1375505898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587.

The product of its (nonzero) digits is 1512000, while the sum is 51.

The square root of 1375505898 is about 37087.8133353801. The cubic root of 1375505898 is about 1112.1264051783.

The spelling of 1375505898 in words is "one billion, three hundred seventy-five million, five hundred five thousand, eight hundred ninety-eight".