1601921002 has 8 divisors (see below), whose sum is σ = 2621325312. Its totient is φ = 728145900.

The previous prime is 1601920987. The next prime is 1601921003. The reversal of 1601921002 is 2001291061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 72814591 = 1601921002 / (1 + 6 + 0 + 1 + 9 + 2 + 1 + 0 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (1601921003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36407274 + ... + 36407317.

It is an arithmetic number, because the mean of its divisors is an integer number (327665664).

Almost surely, 2^1601921002 is an apocalyptic number.

1601921002 is a deficient number, since it is larger than the sum of its proper divisors (1019404310).

1601921002 is a wasteful number, since it uses less digits than its factorization.

1601921002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72814604.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1601921002 is about 40024.0053218066. The cubic root of 1601921002 is about 1170.0749950711.

The spelling of 1601921002 in words is "one billion, six hundred one million, nine hundred twenty-one thousand, two".