1375738020 has 60 divisors (see below), whose sum is σ = 4315746204. Its totient is φ = 366863040.

The previous prime is 1375738003. The next prime is 1375738043. The reversal of 1375738020 is 208375731.

1375738020 is a `hidden beast` number, since 1 + 3 + 7 + 573 + 80 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 769396644 + 606341376 = 27738^2 + 24624^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 422991 + ... + 426230.

Almost surely, 2^1375738020 is an apocalyptic number.

1375738020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1375738020 is an abundant number, since it is smaller than the sum of its proper divisors (2940008184).

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

1375738020 is a wasteful number, since it uses less digits than its factorization.

1375738020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849242 (or 849231 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 1375738020 is about 37090.9425601453. The cubic root of 1375738020 is about 1112.1889602198.

The spelling of 1375738020 in words is "one billion, three hundred seventy-five million, seven hundred thirty-eight thousand, twenty".