18746049 has 16 divisors (see below), whose sum is σ = 28700672. Its totient is φ = 10661328.

The previous prime is 18746033. The next prime is 18746051. The reversal of 18746049 is 94064781.

18746049 = 1012² + 1013² + ... + 1029².

It is a happy number.

It is not a de Polignac number, because 18746049 - 2⁴ = 18746033 is a prime.

It is a super-2 number, since 2×18746049² = 702828706220802, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18745998 and 18746016.

It is not an unprimeable number, because it can be changed into a prime (18746009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2682 + ... + 6684.

It is an arithmetic number, because the mean of its divisors is an integer number (1793792).

Almost surely, 2^18746049 is an apocalyptic number.

It is an amenable number.

18746049 is a deficient number, since it is larger than the sum of its proper divisors (9954623).

18746049 is a wasteful number, since it uses less digits than its factorization.

18746049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4236.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 18746049 is about 4329.6707727032. The cubic root of 18746049 is about 265.6459807003.

The spelling of 18746049 in words is "eighteen million, seven hundred forty-six thousand, forty-nine".