1264224739 has 8 divisors (see below), whose sum is σ = 1319595552. Its totient is φ = 1208887680.

The previous prime is 1264224707. The next prime is 1264224743. The reversal of 1264224739 is 9374224621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1264224739 - 2⁵ = 1264224707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1264224779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95467 + ... + 107899.

It is an arithmetic number, because the mean of its divisors is an integer number (164949444).

Almost surely, 2^1264224739 is an apocalyptic number.

1264224739 is a deficient number, since it is larger than the sum of its proper divisors (55370813).

1264224739 is a wasteful number, since it uses less digits than its factorization.

1264224739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16877.

The product of its digits is 145152, while the sum is 40.

The square root of 1264224739 is about 35555.9381679066. The cubic root of 1264224739 is about 1081.2881118400.

The spelling of 1264224739 in words is "one billion, two hundred sixty-four million, two hundred twenty-four thousand, seven hundred thirty-nine".