166490739000 has 192 divisors, whose sum is σ = 580892532480. Its totient is φ = 42965280000.

The previous prime is 166490738983. The next prime is 166490739007. The reversal of 166490739000 is 937094661.

166490739000 is a `hidden beast` number, since 1 + 6 + 6 + 490 + 73 + 90 + 0 + 0 = 666.

It is a super-2 number, since 2×166490739000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166490739007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19371 + ... + 577370.

It is an arithmetic number, because the mean of its divisors is an integer number (3025481940).

Almost surely, 2^166490739000 is an apocalyptic number.

166490739000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166490739000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290446266240).

166490739000 is an abundant number, since it is smaller than the sum of its proper divisors (414401793480).

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

166490739000 is a wasteful number, since it uses less digits than its factorization.

166490739000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596799 (or 596782 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The spelling of 166490739000 in words is "one hundred sixty-six billion, four hundred ninety million, seven hundred thirty-nine thousand".