162449890 has 8 divisors (see below), whose sum is σ = 292409820. Its totient is φ = 64979952.

The previous prime is 162449879. The next prime is 162449899. The reversal of 162449890 is 98944261.

It can be written as a sum of positive squares in 2 ways, for example, as 161366209 + 1083681 = 12703^2 + 1041^2 .

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

It is a super-2 number, since 2×162449890² = 52779933522024200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (162449899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8122485 + ... + 8122504.

Almost surely, 2^162449890 is an apocalyptic number.

162449890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

162449890 is a deficient number, since it is larger than the sum of its proper divisors (129959930).

162449890 is a wasteful number, since it uses less digits than its factorization.

162449890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16244996.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 162449890 is about 12745.5831565292. The cubic root of 162449890 is about 545.6403437666.

The spelling of 162449890 in words is "one hundred sixty-two million, four hundred forty-nine thousand, eight hundred ninety".