1945375101 has 12 divisors (see below), whose sum is σ = 2812947228. Its totient is φ = 1295550144.

The previous prime is 1945375051. The next prime is 1945375177. The reversal of 1945375101 is 1015735491.

It is a happy number.

1945375101 is a `hidden beast` number, since 1 + 94 + 53 + 7 + 510 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 870191001 + 1075184100 = 29499^2 + 32790^2 .

It is not a de Polignac number, because 1945375101 - 2²¹ = 1943277949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1945371101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104830 + ... + 121983.

It is an arithmetic number, because the mean of its divisors is an integer number (234412269).

Almost surely, 2^1945375101 is an apocalyptic number.

It is an amenable number.

1945375101 is a deficient number, since it is larger than the sum of its proper divisors (867572127).

1945375101 is a wasteful number, since it uses less digits than its factorization.

1945375101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227772 (or 227769 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The square root of 1945375101 is about 44106.4065754625. The cubic root of 1945375101 is about 1248.3444966281.

The spelling of 1945375101 in words is "one billion, nine hundred forty-five million, three hundred seventy-five thousand, one hundred one".