1481481731 has 4 divisors (see below), whose sum is σ = 1482498600. Its totient is φ = 1480464864.

The previous prime is 1481481721. The next prime is 1481481767. The reversal of 1481481731 is 1371841841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1371841841 = 1619 ⋅847339.

It is a cyclic number.

It is not a de Polignac number, because 1481481731 - 2²⁶ = 1414372867 is a prime.

It is a super-2 number, since 2×1481481731² = 4389576238573512722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1481481721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506246 + ... + 509163.

It is an arithmetic number, because the mean of its divisors is an integer number (370624650).

Almost surely, 2^1481481731 is an apocalyptic number.

1481481731 is a deficient number, since it is larger than the sum of its proper divisors (1016869).

1481481731 is a wasteful number, since it uses less digits than its factorization.

1481481731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016868.

The product of its digits is 21504, while the sum is 38.

The square root of 1481481731 is about 38490.0211873156. The cubic root of 1481481731 is about 1139.9840284517.

The spelling of 1481481731 in words is "one billion, four hundred eighty-one million, four hundred eighty-one thousand, seven hundred thirty-one".