1945137876 has 48 divisors (see below), whose sum is σ = 5166540288. Its totient is φ = 563807200.

The previous prime is 1945137869. The next prime is 1945137917. The reversal of 1945137876 is 6787315491.

It is a happy number.

It is a super-2 number, since 2×1945137876² = 7567122713299582752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317310 + ... + 323381.

It is an arithmetic number, because the mean of its divisors is an integer number (107636256).

Almost surely, 2^1945137876 is an apocalyptic number.

It is an amenable number.

1945137876 is an abundant number, since it is smaller than the sum of its proper divisors (3221402412).

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

1945137876 is a wasteful number, since it uses less digits than its factorization.

1945137876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640732 (or 640730 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 51.

The square root of 1945137876 is about 44103.7172582992. The cubic root of 1945137876 is about 1248.2937522479.

The spelling of 1945137876 in words is "one billion, nine hundred forty-five million, one hundred thirty-seven thousand, eight hundred seventy-six".