1262648387 has 16 divisors (see below), whose sum is σ = 1695305472. Its totient is φ = 908197920.

The previous prime is 1262648381. The next prime is 1262648393. The reversal of 1262648387 is 7838462621.

It is an interprime number because it is at equal distance from previous prime (1262648381) and next prime (1262648393).

It is not a de Polignac number, because 1262648387 - 2⁶ = 1262648323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1262648381) 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, 629693 + ... + 631694.

It is an arithmetic number, because the mean of its divisors is an integer number (105956592).

Almost surely, 2^1262648387 is an apocalyptic number.

1262648387 is a deficient number, since it is larger than the sum of its proper divisors (432657085).

1262648387 is a wasteful number, since it uses less digits than its factorization.

1262648387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261418.

The product of its digits is 774144, while the sum is 47.

The square root of 1262648387 is about 35533.7640421051. The cubic root of 1262648387 is about 1080.8385083387.

The spelling of 1262648387 in words is "one billion, two hundred sixty-two million, six hundred forty-eight thousand, three hundred eighty-seven".