1901315459 has 2 divisors, whose sum is σ = 1901315460. Its totient is φ = 1901315458.

The previous prime is 1901315399. The next prime is 1901315473. The reversal of 1901315459 is 9545131091.

It is a strong prime.

It is an emirp because it is prime and its reverse (9545131091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1901315459 - 2²⁰ = 1900266883 is a prime.

It is not a weakly prime, because it can be changed into another prime (1901315159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 950657729 + 950657730.

It is an arithmetic number, because the mean of its divisors is an integer number (950657730).

Almost surely, 2^1901315459 is an apocalyptic number.

1901315459 is a deficient number, since it is larger than the sum of its proper divisors (1).

1901315459 is an equidigital number, since it uses as much as digits as its factorization.

1901315459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24300, while the sum is 38.

The square root of 1901315459 is about 43604.0761741377. The cubic root of 1901315459 is about 1238.8481019284.

The spelling of 1901315459 in words is "one billion, nine hundred one million, three hundred fifteen thousand, four hundred fifty-nine".