2781954916 has 24 divisors (see below), whose sum is σ = 5266033920. Its totient is φ = 1278317472.

The previous prime is 2781954899. The next prime is 2781954943. The reversal of 2781954916 is 6194591872.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106036 + ... + 129643.

It is an arithmetic number, because the mean of its divisors is an integer number (219418080).

Almost surely, 2^2781954916 is an apocalyptic number.

2781954916 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2781954916 is a deficient number, since it is larger than the sum of its proper divisors (2484079004).

2781954916 is a wasteful number, since it uses less digits than its factorization.

2781954916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235923 (or 235921 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 52.

The square root of 2781954916 is about 52744.2405955380. The cubic root of 2781954916 is about 1406.4253828969.

The spelling of 2781954916 in words is "two billion, seven hundred eighty-one million, nine hundred fifty-four thousand, nine hundred sixteen".