18406701 has 6 divisors (see below), whose sum is σ = 26587470. Its totient is φ = 12271128.

The previous prime is 18406691. The next prime is 18406711. The reversal of 18406701 is 10760481.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18406691) and next prime (18406711).

It can be written as a sum of positive squares in only one way, i.e., 18404100 + 2601 = 4290^2 + 51^2 .

It is not a de Polignac number, because 18406701 - 2⁵ = 18406669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18406711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1022586 + ... + 1022603.

It is an arithmetic number, because the mean of its divisors is an integer number (4431245).

Almost surely, 2^18406701 is an apocalyptic number.

It is an amenable number.

18406701 is a deficient number, since it is larger than the sum of its proper divisors (8180769).

18406701 is a wasteful number, since it uses less digits than its factorization.

18406701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045195 (or 2045192 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 18406701 is about 4290.3031361432. The cubic root of 18406701 is about 264.0332688790.

The spelling of 18406701 in words is "eighteen million, four hundred six thousand, seven hundred one".