901748381 has 2 divisors, whose sum is σ = 901748382. Its totient is φ = 901748380.

The previous prime is 901748371. The next prime is 901748411. The reversal of 901748381 is 183847109.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 617522500 + 284225881 = 24850^2 + 16859^2 .

It is an emirp because it is prime and its reverse (183847109) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 901748381 - 2¹⁸ = 901486237 is a prime.

It is a super-2 number, since 2×901748381² = 1626300285272242322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (901748311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450874190 + 450874191.

It is an arithmetic number, because the mean of its divisors is an integer number (450874191).

Almost surely, 2^901748381 is an apocalyptic number.

It is an amenable number.

901748381 is a deficient number, since it is larger than the sum of its proper divisors (1).

901748381 is an equidigital number, since it uses as much as digits as its factorization.

901748381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 901748381 is about 30029.1255450438. The cubic root of 901748381 is about 966.1141814145.

It can be divided in two parts, 90 and 1748381, that added together give a palindrome (1748471).

The spelling of 901748381 in words is "nine hundred one million, seven hundred forty-eight thousand, three hundred eighty-one".