901493381 has 2 divisors, whose sum is σ = 901493382. Its totient is φ = 901493380.

The previous prime is 901493339. The next prime is 901493393. The reversal of 901493381 is 183394109.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 689325025 + 212168356 = 26255^2 + 14566^2 .

It is a cyclic number.

It is not a de Polignac number, because 901493381 - 2¹⁰ = 901492357 is a prime.

It is a super-2 number, since 2×901493381² = 1625380631973622322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (901493311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450746690 + 450746691.

It is an arithmetic number, because the mean of its divisors is an integer number (450746691).

Almost surely, 2^901493381 is an apocalyptic number.

It is an amenable number.

901493381 is a deficient number, since it is larger than the sum of its proper divisors (1).

901493381 is an equidigital number, since it uses as much as digits as its factorization.

901493381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 901493381 is about 30024.8793669517. The cubic root of 901493381 is about 966.0231056232.

The spelling of 901493381 in words is "nine hundred one million, four hundred ninety-three thousand, three hundred eighty-one".