1265828910 has 32 divisors (see below), whose sum is σ = 3102630912. Its totient is φ = 330372000.

The previous prime is 1265828909. The next prime is 1265828911. The reversal of 1265828910 is 198285621.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1265828909) and next prime (1265828911).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265828911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447466 + ... + 450285.

It is an arithmetic number, because the mean of its divisors is an integer number (96957216).

Almost surely, 2^1265828910 is an apocalyptic number.

1265828910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1265828910 is an abundant number, since it is smaller than the sum of its proper divisors (1836802002).

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

1265828910 is a wasteful number, since it uses less digits than its factorization.

1265828910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897808.

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 1265828910 is about 35578.4894283049. The cubic root of 1265828910 is about 1081.7452662871.

The spelling of 1265828910 in words is "one billion, two hundred sixty-five million, eight hundred twenty-eight thousand, nine hundred ten".