901849913 has 2 divisors, whose sum is σ = 901849914. Its totient is φ = 901849912.

The previous prime is 901849909. The next prime is 901849939. The reversal of 901849913 is 319948109.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 479259664 + 422590249 = 21892^2 + 20557^2 .

It is a cyclic number.

It is not a de Polignac number, because 901849913 - 2² = 901849909 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (901849943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450924956 + 450924957.

It is an arithmetic number, because the mean of its divisors is an integer number (450924957).

Almost surely, 2^901849913 is an apocalyptic number.

It is an amenable number.

901849913 is a deficient number, since it is larger than the sum of its proper divisors (1).

901849913 is an equidigital number, since it uses as much as digits as its factorization.

901849913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 901849913 is about 30030.8160561780. The cubic root of 901849913 is about 966.1504398009.

The spelling of 901849913 in words is "nine hundred one million, eight hundred forty-nine thousand, nine hundred thirteen".