1504123381 has 2 divisors, whose sum is σ = 1504123382. Its totient is φ = 1504123380.

The previous prime is 1504123351. The next prime is 1504123393. The reversal of 1504123381 is 1833214051.

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., 1334733156 + 169390225 = 36534^2 + 13015^2 .

It is a cyclic number.

It is not a de Polignac number, because 1504123381 - 2¹⁷ = 1503992309 is a prime.

It is a super-2 number, since 2×1504123381² = 4524774290541742322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1504123321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 752061690 + 752061691.

It is an arithmetic number, because the mean of its divisors is an integer number (752061691).

Almost surely, 2^1504123381 is an apocalyptic number.

It is an amenable number.

1504123381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1504123381 is an equidigital number, since it uses as much as digits as its factorization.

1504123381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1504123381 is about 38783.0295490180. The cubic root of 1504123381 is about 1145.7621924417.

The spelling of 1504123381 in words is "one billion, five hundred four million, one hundred twenty-three thousand, three hundred eighty-one".