16922161993 has 16 divisors (see below), whose sum is σ = 19016712000. Its totient is φ = 14925113280.

The previous prime is 16922161969. The next prime is 16922162009. The reversal of 16922161993 is 39916122961.

It is not a de Polignac number, because 16922161993 - 2¹⁷ = 16922030921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16922161493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49578 + ... + 190531.

It is an arithmetic number, because the mean of its divisors is an integer number (1188544500).

Almost surely, 2^16922161993 is an apocalyptic number.

It is an amenable number.

16922161993 is a deficient number, since it is larger than the sum of its proper divisors (2094550007).

16922161993 is a wasteful number, since it uses less digits than its factorization.

16922161993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240312.

The product of its digits is 314928, while the sum is 49.

The spelling of 16922161993 in words is "sixteen billion, nine hundred twenty-two million, one hundred sixty-one thousand, nine hundred ninety-three".