1901345287 has 2 divisors, whose sum is σ = 1901345288. Its totient is φ = 1901345286.

The previous prime is 1901345279. The next prime is 1901345291. The reversal of 1901345287 is 7825431091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1901345287 - 2³ = 1901345279 is a prime.

It is a super-2 number, since 2×1901345287² = 7230227800794224738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1901345587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 950672643 + 950672644.

It is an arithmetic number, because the mean of its divisors is an integer number (950672644).

Almost surely, 2^1901345287 is an apocalyptic number.

1901345287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1901345287 is an equidigital number, since it uses as much as digits as its factorization.

1901345287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 1901345287 is about 43604.4182050397. The cubic root of 1901345287 is about 1238.8545802796.

The spelling of 1901345287 in words is "one billion, nine hundred one million, three hundred forty-five thousand, two hundred eighty-seven".