3733251421 has 2 divisors, whose sum is σ = 3733251422. Its totient is φ = 3733251420.

The previous prime is 3733251409. The next prime is 3733251449. The reversal of 3733251421 is 1241523373.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2288187225 + 1445064196 = 47835^2 + 38014^2 .

It is an emirp because it is prime and its reverse (1241523373) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3733251421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3733251481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1866625710 + 1866625711.

It is an arithmetic number, because the mean of its divisors is an integer number (1866625711).

Almost surely, 2^3733251421 is an apocalyptic number.

It is an amenable number.

3733251421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3733251421 is an equidigital number, since it uses as much as digits as its factorization.

3733251421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 31.

The square root of 3733251421 is about 61100.3389597799. The cubic root of 3733251421 is about 1551.2998352128.

Adding to 3733251421 its reverse (1241523373), we get a palindrome (4974774794).

The spelling of 3733251421 in words is "three billion, seven hundred thirty-three million, two hundred fifty-one thousand, four hundred twenty-one".