1630369540 has 12 divisors (see below), whose sum is σ = 3423776076. Its totient is φ = 652147808.

The previous prime is 1630369519. The next prime is 1630369567. The reversal of 1630369540 is 459630361.

It can be written as a sum of positive squares in 2 ways, for example, as 1218847744 + 411521796 = 34912^2 + 20286^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1630369540.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40759219 + ... + 40759258.

It is an arithmetic number, because the mean of its divisors is an integer number (285314673).

Almost surely, 2^1630369540 is an apocalyptic number.

1630369540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1630369540 is an abundant number, since it is smaller than the sum of its proper divisors (1793406536).

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

1630369540 is a wasteful number, since it uses less digits than its factorization.

1630369540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81518486 (or 81518484 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 1630369540 is about 40377.8347611657. The cubic root of 1630369540 is about 1176.9608520403.

The spelling of 1630369540 in words is "one billion, six hundred thirty million, three hundred sixty-nine thousand, five hundred forty".