1631125470 has 48 divisors (see below), whose sum is σ = 4239009072. Its totient is φ = 401506560.

The previous prime is 1631125453. The next prime is 1631125487. The reversal of 1631125470 is 745211361.

It is an interprime number because it is at equal distance from previous prime (1631125453) and next prime (1631125487).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155791 + ... + 165930.

It is an arithmetic number, because the mean of its divisors is an integer number (88312689).

Almost surely, 2^1631125470 is an apocalyptic number.

1631125470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1631125470 is an abundant number, since it is smaller than the sum of its proper divisors (2607883602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1631125470 is a wasteful number, since it uses less digits than its factorization.

1631125470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321757 (or 321744 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1631125470 is about 40387.1943813878. The cubic root of 1631125470 is about 1177.1427254389.

The spelling of 1631125470 in words is "one billion, six hundred thirty-one million, one hundred twenty-five thousand, four hundred seventy".