1240641363 has 16 divisors (see below), whose sum is σ = 1810641056. Its totient is φ = 750954240.

The previous prime is 1240641361. The next prime is 1240641383. The reversal of 1240641363 is 3631460421.

It is not a de Polignac number, because 1240641363 - 2¹ = 1240641361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1240641363.

It is not an unprimeable number, because it can be changed into a prime (1240641361) 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, 258370 + ... + 263127.

It is an arithmetic number, because the mean of its divisors is an integer number (113165066).

Almost surely, 2^1240641363 is an apocalyptic number.

1240641363 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1240641363 is a deficient number, since it is larger than the sum of its proper divisors (569999693).

1240641363 is a wasteful number, since it uses less digits than its factorization.

1240641363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521574.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 1240641363 is about 35222.7392887038. The cubic root of 1240641363 is about 1074.5222648825.

The spelling of 1240641363 in words is "one billion, two hundred forty million, six hundred forty-one thousand, three hundred sixty-three".