1621746022 has 8 divisors (see below), whose sum is σ = 2619743616. Its totient is φ = 748498152.

The previous prime is 1621746019. The next prime is 1621746041. The reversal of 1621746022 is 2206471261.

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

It is a congruent number.

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, 31187398 + ... + 31187449.

It is an arithmetic number, because the mean of its divisors is an integer number (327467952).

Almost surely, 2^1621746022 is an apocalyptic number.

1621746022 is a deficient number, since it is larger than the sum of its proper divisors (997997594).

1621746022 is a wasteful number, since it uses less digits than its factorization.

1621746022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62374862.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 1621746022 is about 40270.9078864632. The cubic root of 1621746022 is about 1174.8820819044.

The spelling of 1621746022 in words is "one billion, six hundred twenty-one million, seven hundred forty-six thousand, twenty-two".