2780315975 has 12 divisors (see below), whose sum is σ = 3540771144. Its totient is φ = 2164137120.

The previous prime is 2780315971. The next prime is 2780315987. The reversal of 2780315975 is 5795130872.

It is not a de Polignac number, because 2780315975 - 2² = 2780315971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780315971) 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, 1501949 + ... + 1503798.

It is an arithmetic number, because the mean of its divisors is an integer number (295064262).

Almost surely, 2^2780315975 is an apocalyptic number.

2780315975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2780315975 is a deficient number, since it is larger than the sum of its proper divisors (760455169).

2780315975 is a wasteful number, since it uses less digits than its factorization.

2780315975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3005794 (or 3005789 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 47.

The square root of 2780315975 is about 52728.7016244474. The cubic root of 2780315975 is about 1406.1491381816.

The spelling of 2780315975 in words is "two billion, seven hundred eighty million, three hundred fifteen thousand, nine hundred seventy-five".