19051139 has 2 divisors, whose sum is σ = 19051140. Its totient is φ = 19051138.

The previous prime is 19051133. The next prime is 19051147. The reversal of 19051139 is 93115091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19051139 - 2¹² = 19047043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19051133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9525569 + 9525570.

It is an arithmetic number, because the mean of its divisors is an integer number (9525570).

Almost surely, 2^19051139 is an apocalyptic number.

19051139 is a deficient number, since it is larger than the sum of its proper divisors (1).

19051139 is an equidigital number, since it uses as much as digits as its factorization.

19051139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1215, while the sum is 29.

The square root of 19051139 is about 4364.7610472969. The cubic root of 19051139 is about 267.0793528488.

The spelling of 19051139 in words is "nineteen million, fifty-one thousand, one hundred thirty-nine".