18076761 has 6 divisors (see below), whose sum is σ = 26110890. Its totient is φ = 12051168.

The previous prime is 18076759. The next prime is 18076783. The reversal of 18076761 is 16767081.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16451136 + 1625625 = 4056^2 + 1275^2 .

It is not a de Polignac number, because 18076761 - 2¹ = 18076759 is a prime.

It is a super-2 number, since 2×18076761² = 653538576502242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18076711) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1004256 + ... + 1004273.

It is an arithmetic number, because the mean of its divisors is an integer number (4351815).

Almost surely, 2^18076761 is an apocalyptic number.

It is an amenable number.

18076761 is a deficient number, since it is larger than the sum of its proper divisors (8034129).

18076761 is a wasteful number, since it uses less digits than its factorization.

18076761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008535 (or 2008532 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 18076761 is about 4251.6774336725. The cubic root of 18076761 is about 262.4461494978.

The spelling of 18076761 in words is "eighteen million, seventy-six thousand, seven hundred sixty-one".