1481397309 has 32 divisors (see below), whose sum is σ = 2531232000. Its totient is φ = 838734912.

The previous prime is 1481397293. The next prime is 1481397331. The reversal of 1481397309 is 9037931841.

It is not a de Polignac number, because 1481397309 - 2⁴ = 1481397293 is a prime.

It is a super-2 number, since 2×1481397309² = 4389075974224882962, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1481397349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15354 + ... + 56555.

It is an arithmetic number, because the mean of its divisors is an integer number (79101000).

Almost surely, 2^1481397309 is an apocalyptic number.

It is an amenable number.

1481397309 is a deficient number, since it is larger than the sum of its proper divisors (1049834691).

1481397309 is a wasteful number, since it uses less digits than its factorization.

1481397309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72034 (or 72028 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 1481397309 is about 38488.9244978344. The cubic root of 1481397309 is about 1139.9623741044.

The spelling of 1481397309 in words is "one billion, four hundred eighty-one million, three hundred ninety-seven thousand, three hundred nine".