18970530 has 16 divisors (see below), whose sum is σ = 45529344. Its totient is φ = 5058800.

The previous prime is 18970519. The next prime is 18970541. The reversal of 18970530 is 3507981.

It is an interprime number because it is at equal distance from previous prime (18970519) and next prime (18970541).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18970491 and 18970500.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316146 + ... + 316205.

It is an arithmetic number, because the mean of its divisors is an integer number (2845584).

Almost surely, 2^18970530 is an apocalyptic number.

18970530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18970530 is an abundant number, since it is smaller than the sum of its proper divisors (26558814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18970530 is a wasteful number, since it uses less digits than its factorization.

18970530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632361.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 18970530 is about 4355.5171908741. The cubic root of 18970530 is about 266.7021324357.

The spelling of 18970530 in words is "eighteen million, nine hundred seventy thousand, five hundred thirty".