1261010456 has 16 divisors (see below), whose sum is σ = 2372001840. Its totient is φ = 628476640.

The previous prime is 1261010453. The next prime is 1261010477. The reversal of 1261010456 is 6540101621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261010453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250931 + ... + 255906.

It is an arithmetic number, because the mean of its divisors is an integer number (148250115).

Almost surely, 2^1261010456 is an apocalyptic number.

It is an amenable number.

1261010456 is a deficient number, since it is larger than the sum of its proper divisors (1110991384).

1261010456 is a wasteful number, since it uses less digits than its factorization.

1261010456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507154 (or 507150 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1261010456 is about 35510.7090326285. The cubic root of 1261010456 is about 1080.3709448230.

The spelling of 1261010456 in words is "one billion, two hundred sixty-one million, ten thousand, four hundred fifty-six".