1630454250 has 64 divisors (see below), whose sum is σ = 4078563840. Its totient is φ = 433832000.

The previous prime is 1630454237. The next prime is 1630454251. The reversal of 1630454250 is 524540361.

It is a super-2 number, since 2×1630454250² = 5316762122686125000, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1630454251) 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, 379615 + ... + 383885.

It is an arithmetic number, because the mean of its divisors is an integer number (63727560).

Almost surely, 2^1630454250 is an apocalyptic number.

1630454250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1630454250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2039281920).

1630454250 is an abundant number, since it is smaller than the sum of its proper divisors (2448109590).

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

1630454250 is a wasteful number, since it uses less digits than its factorization.

1630454250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4800 (or 4790 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 1630454250 is about 40378.8837141395. The cubic root of 1630454250 is about 1176.9812356864.

The spelling of 1630454250 in words is "one billion, six hundred thirty million, four hundred fifty-four thousand, two hundred fifty".