18941707 has 2 divisors, whose sum is σ = 18941708. Its totient is φ = 18941706.

The previous prime is 18941633. The next prime is 18941729. The reversal of 18941707 is 70714981.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18941707 is a prime.

It is not a weakly prime, because it can be changed into another prime (18941737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9470853 + 9470854.

It is an arithmetic number, because the mean of its divisors is an integer number (9470854).

Almost surely, 2^18941707 is an apocalyptic number.

18941707 is a deficient number, since it is larger than the sum of its proper divisors (1).

18941707 is an equidigital number, since it uses as much as digits as its factorization.

18941707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 18941707 is about 4352.2071412101. The cubic root of 18941707 is about 266.5669920886.

The spelling of 18941707 in words is "eighteen million, nine hundred forty-one thousand, seven hundred seven".