1887149339 has 2 divisors, whose sum is σ = 1887149340. Its totient is φ = 1887149338.

The previous prime is 1887149309. The next prime is 1887149357. The reversal of 1887149339 is 9339417881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1887149339 - 2⁸ = 1887149083 is a prime.

It is a super-2 number, since 2×1887149339² = 7122665255376273842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1887149309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 943574669 + 943574670.

It is an arithmetic number, because the mean of its divisors is an integer number (943574670).

Almost surely, 2^1887149339 is an apocalyptic number.

1887149339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1887149339 is an equidigital number, since it uses as much as digits as its factorization.

1887149339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 53.

The square root of 1887149339 is about 43441.3321503842. The cubic root of 1887149339 is about 1235.7636693673.

The spelling of 1887149339 in words is "one billion, eight hundred eighty-seven million, one hundred forty-nine thousand, three hundred thirty-nine".