1261610484 has 12 divisors (see below), whose sum is σ = 2943757824. Its totient is φ = 420536824.

The previous prime is 1261610473. The next prime is 1261610489. The reversal of 1261610484 is 4840161621.

1261610484 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1261610484² = 3183322026677428512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261610489) 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, 52567092 + ... + 52567115.

It is an arithmetic number, because the mean of its divisors is an integer number (245313152).

Almost surely, 2^1261610484 is an apocalyptic number.

It is an amenable number.

1261610484 is an abundant number, since it is smaller than the sum of its proper divisors (1682147340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1261610484 is a wasteful number, since it uses less digits than its factorization.

1261610484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105134214 (or 105134212 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 1261610484 is about 35519.1565778243. The cubic root of 1261610484 is about 1080.5422756849.

The spelling of 1261610484 in words is "one billion, two hundred sixty-one million, six hundred ten thousand, four hundred eighty-four".