1629972330 has 32 divisors (see below), whose sum is σ = 4470781824. Its totient is φ = 372565056.

The previous prime is 1629972329. The next prime is 1629972341. The reversal of 1629972330 is 332799261.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 3880677 + ... + 3881096.

It is an arithmetic number, because the mean of its divisors is an integer number (139711932).

Almost surely, 2^1629972330 is an apocalyptic number.

1629972330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1629972330 is an abundant number, since it is smaller than the sum of its proper divisors (2840809494).

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

1629972330 is a wasteful number, since it uses less digits than its factorization.

1629972330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7761790.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 1629972330 is about 40372.9157975988. The cubic root of 1629972330 is about 1176.8652625477.

The spelling of 1629972330 in words is "one billion, six hundred twenty-nine million, nine hundred seventy-two thousand, three hundred thirty".