1945813877 has 8 divisors (see below), whose sum is σ = 2240020416. Its totient is φ = 1655665632.

The previous prime is 1945813873. The next prime is 1945813907. The reversal of 1945813877 is 7783185491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1945813877 - 2² = 1945813873 is a prime.

It is a super-2 number, since 2×1945813877² = 7572383287851542258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1945813873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1013543 + ... + 1015460.

It is an arithmetic number, because the mean of its divisors is an integer number (280002552).

Almost surely, 2^1945813877 is an apocalyptic number.

It is an amenable number.

1945813877 is a deficient number, since it is larger than the sum of its proper divisors (294206539).

1945813877 is a wasteful number, since it uses less digits than its factorization.

1945813877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2029147.

The product of its digits is 1693440, while the sum is 53.

The square root of 1945813877 is about 44111.3803570008. The cubic root of 1945813877 is about 1248.4383435558.

The spelling of 1945813877 in words is "one billion, nine hundred forty-five million, eight hundred thirteen thousand, eight hundred seventy-seven".