1630145332 has 48 divisors (see below), whose sum is σ = 3087826560. Its totient is φ = 750701952.

The previous prime is 1630145219. The next prime is 1630145347. The reversal of 1630145332 is 2335410361.

It is a self number, because there is not a number n which added to its sum of digits gives 1630145332.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1458838 + ... + 1459954.

It is an arithmetic number, because the mean of its divisors is an integer number (64329720).

Almost surely, 2^1630145332 is an apocalyptic number.

It is an amenable number.

1630145332 is a deficient number, since it is larger than the sum of its proper divisors (1457681228).

1630145332 is a wasteful number, since it uses less digits than its factorization.

1630145332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720 (or 1718 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 1630145332 is about 40375.0582909796. The cubic root of 1630145332 is about 1176.9068977824.

Adding to 1630145332 its reverse (2335410361), we get a palindrome (3965555693).

The spelling of 1630145332 in words is "one billion, six hundred thirty million, one hundred forty-five thousand, three hundred thirty-two".