2556148916 has 6 divisors (see below), whose sum is σ = 4473260610. Its totient is φ = 1278074456.

The previous prime is 2556148901. The next prime is 2556148919. The reversal of 2556148916 is 6198416552.

It can be written as a sum of positive squares in only one way, i.e., 1735555600 + 820593316 = 41660^2 + 28646^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556148919) by changing a digit.

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 as a sum of consecutive naturals, namely, 319518611 + ... + 319518618.

It is an arithmetic number, because the mean of its divisors is an integer number (745543435).

Almost surely, 2^2556148916 is an apocalyptic number.

It is an amenable number.

2556148916 is a deficient number, since it is larger than the sum of its proper divisors (1917111694).

2556148916 is a wasteful number, since it uses less digits than its factorization.

2556148916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639037233 (or 639037231 counting only the distinct ones).

The product of its digits is 518400, while the sum is 47.

The square root of 2556148916 is about 50558.3713740860. The cubic root of 2556148916 is about 1367.2944483929.

The spelling of 2556148916 in words is "two billion, five hundred fifty-six million, one hundred forty-eight thousand, nine hundred sixteen".