18348970 has 16 divisors (see below), whose sum is σ = 33077160. Its totient is φ = 7328704.

The previous prime is 18348949. The next prime is 18348977. The reversal of 18348970 is 7984381.

It can be written as a sum of positive squares in 4 ways, for example, as 18224361 + 124609 = 4269^2 + 353^2 .

It is not an unprimeable number, because it can be changed into a prime (18348977) 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, 11544 + ... + 13036.

Almost surely, 2^18348970 is an apocalyptic number.

18348970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18348970 is a deficient number, since it is larger than the sum of its proper divisors (14728190).

18348970 is a wasteful number, since it uses less digits than its factorization.

18348970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2729.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 18348970 is about 4283.5697729814. The cubic root of 18348970 is about 263.7569407366.

The spelling of 18348970 in words is "eighteen million, three hundred forty-eight thousand, nine hundred seventy".