1406481957 has 12 divisors (see below), whose sum is σ = 2035997964. Its totient is φ = 935617920.

The previous prime is 1406481931. The next prime is 1406482009. The reversal of 1406481957 is 7591846041.

It can be written as a sum of positive squares in 2 ways, for example, as 217680516 + 1188801441 = 14754^2 + 34479^2 .

It is not a de Polignac number, because 1406481957 - 2¹¹ = 1406479909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406481907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165348 + ... + 173645.

It is an arithmetic number, because the mean of its divisors is an integer number (169666497).

Almost surely, 2^1406481957 is an apocalyptic number.

It is an amenable number.

1406481957 is a deficient number, since it is larger than the sum of its proper divisors (629516007).

1406481957 is a wasteful number, since it uses less digits than its factorization.

1406481957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339460 (or 339457 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 1406481957 is about 37503.0926324750. The cubic root of 1406481957 is about 1120.4127828498.

The spelling of 1406481957 in words is "one billion, four hundred six million, four hundred eighty-one thousand, nine hundred fifty-seven".