16380091 has 8 divisors (see below), whose sum is σ = 20160224. Its totient is φ = 12960000.

The previous prime is 16380083. The next prime is 16380101. The reversal of 16380091 is 19008361.

16380091 = T₃₃₀ + T₃₃₁ + ... + T₅₁₁.

It is a happy number.

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

It is a 8-Lehmer number, since φ(16380091) divides (16380091-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 16380091 - 2³ = 16380083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16380031) 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, 89910 + ... + 90091.

It is an arithmetic number, because the mean of its divisors is an integer number (2520028).

Almost surely, 2^16380091 is an apocalyptic number.

16380091 is a deficient number, since it is larger than the sum of its proper divisors (3780133).

16380091 is a wasteful number, since it uses less digits than its factorization.

16380091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180021.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 16380091 is about 4047.2325112353. The cubic root of 16380091 is about 253.9639676500.

The spelling of 16380091 in words is "sixteen million, three hundred eighty thousand, ninety-one".