1621401932 has 12 divisors (see below), whose sum is σ = 2838290616. Its totient is φ = 810461760.

The previous prime is 1621401883. The next prime is 1621401941. The reversal of 1621401932 is 2391041261.

It is a junction number, because it is equal to n+sod(n) for n = 1621401895 and 1621401904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44093 + ... + 72020.

It is an arithmetic number, because the mean of its divisors is an integer number (236524218).

Almost surely, 2^1621401932 is an apocalyptic number.

It is an amenable number.

1621401932 is a deficient number, since it is larger than the sum of its proper divisors (1216888684).

1621401932 is a wasteful number, since it uses less digits than its factorization.

1621401932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119608 (or 119606 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1621401932 is about 40266.6354690828. The cubic root of 1621401932 is about 1174.7989834486.

The spelling of 1621401932 in words is "one billion, six hundred twenty-one million, four hundred one thousand, nine hundred thirty-two".