2630649478 has 16 divisors (see below), whose sum is σ = 3971278080. Its totient is φ = 1306915200.

The previous prime is 2630649457. The next prime is 2630649493. The reversal of 2630649478 is 8749460362.

It is a super-2 number, since 2×2630649478² = 13840633352203344968, which contains 22 as substring.

It is a congruent number.

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, 216283 + ... + 228121.

It is an arithmetic number, because the mean of its divisors is an integer number (248204880).

Almost surely, 2^2630649478 is an apocalyptic number.

2630649478 is a deficient number, since it is larger than the sum of its proper divisors (1340628602).

2630649478 is a wasteful number, since it uses less digits than its factorization.

2630649478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12543.

The product of its (nonzero) digits is 1741824, while the sum is 49.

The square root of 2630649478 is about 51289.8574573960. The cubic root of 2630649478 is about 1380.4509969613.

The spelling of 2630649478 in words is "two billion, six hundred thirty million, six hundred forty-nine thousand, four hundred seventy-eight".