1262260638 has 32 divisors (see below), whose sum is σ = 2810073600. Its totient is φ = 419996088.

The previous prime is 1262260627. The next prime is 1262260639. The reversal of 1262260638 is 8360622621.

1262260638 is a `hidden beast` number, since 1 + 26 + 22 + 606 + 3 + 8 = 666.

1262260638 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×1262260638⁴ (a number of 38 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1262260639) 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, 9643 + ... + 51161.

It is an arithmetic number, because the mean of its divisors is an integer number (87814800).

Almost surely, 2^1262260638 is an apocalyptic number.

1262260638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1262260638 is an abundant number, since it is smaller than the sum of its proper divisors (1547812962).

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

1262260638 is a wasteful number, since it uses less digits than its factorization.

1262260638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42093 (or 42087 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 1262260638 is about 35528.3075589029. The cubic root of 1262260638 is about 1080.7278581206.

The spelling of 1262260638 in words is "one billion, two hundred sixty-two million, two hundred sixty thousand, six hundred thirty-eight".