16180090 has 16 divisors (see below), whose sum is σ = 30837672. Its totient is φ = 6091264.

The previous prime is 16180037. The next prime is 16180091. The reversal of 16180090 is 9008161.

It can be written as a sum of positive squares in 4 ways, for example, as 15705369 + 474721 = 3963^2 + 689^2 .

It is not an unprimeable number, because it can be changed into a prime (16180091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47419 + ... + 47758.

Almost surely, 2^16180090 is an apocalyptic number.

16180090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16180090 is a deficient number, since it is larger than the sum of its proper divisors (14657582).

16180090 is a wasteful number, since it uses less digits than its factorization.

16180090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95201.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 16180090 is about 4022.4482594559. The cubic root of 16180090 is about 252.9260981796.

The spelling of 16180090 in words is "sixteen million, one hundred eighty thousand, ninety".