1631472401 has 16 divisors (see below), whose sum is σ = 1842484560. Its totient is φ = 1434101760.

The previous prime is 1631472383. The next prime is 1631472407. The reversal of 1631472401 is 1042741361.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 8994001 + 1622478400 = 2999^2 + 40280^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1631472401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1631472407) 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, 2120 + ... + 57161.

It is an arithmetic number, because the mean of its divisors is an integer number (115155285).

Almost surely, 2^1631472401 is an apocalyptic number.

It is an amenable number.

1631472401 is a deficient number, since it is larger than the sum of its proper divisors (211012159).

1631472401 is a wasteful number, since it uses less digits than its factorization.

1631472401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59396.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1631472401 is about 40391.4892149324. The cubic root of 1631472401 is about 1177.2261766837.

The spelling of 1631472401 in words is "one billion, six hundred thirty-one million, four hundred seventy-two thousand, four hundred one".