169199531492 has 6 divisors (see below), whose sum is σ = 296099180118. Its totient is φ = 84599765744.

The previous prime is 169199531461. The next prime is 169199531521. The reversal of 169199531492 is 294135991961.

It can be written as a sum of positive squares in only one way, i.e., 119262478336 + 49937053156 = 345344^2 + 223466^2 .

It is a super-2 number, since 2×169199531492² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21149941433 + ... + 21149941440.

It is an arithmetic number, because the mean of its divisors is an integer number (49349863353).

Almost surely, 2^169199531492 is an apocalyptic number.

It is an amenable number.

169199531492 is a deficient number, since it is larger than the sum of its proper divisors (126899648626).

169199531492 is a wasteful number, since it uses less digits than its factorization.

169199531492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42299882877 (or 42299882875 counting only the distinct ones).

The product of its digits is 4723920, while the sum is 59.

The spelling of 169199531492 in words is "one hundred sixty-nine billion, one hundred ninety-nine million, five hundred thirty-one thousand, four hundred ninety-two".