1540368373 has 2 divisors, whose sum is σ = 1540368374. Its totient is φ = 1540368372.

The previous prime is 1540368367. The next prime is 1540368449. The reversal of 1540368373 is 3738630451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 905227569 + 635140804 = 30087^2 + 25202^2 .

It is a cyclic number.

It is not a de Polignac number, because 1540368373 - 2⁵ = 1540368341 is a prime.

It is a super-3 number, since 3×1540368373³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1540360373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770184186 + 770184187.

It is an arithmetic number, because the mean of its divisors is an integer number (770184187).

Almost surely, 2^1540368373 is an apocalyptic number.

It is an amenable number.

1540368373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540368373 is an equidigital number, since it uses as much as digits as its factorization.

1540368373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 1540368373 is about 39247.5269666765. The cubic root of 1540368373 is about 1154.8924202818.

It can be divided in two parts, 154036 and 8373, that added together give a square (162409 = 403²).

The spelling of 1540368373 in words is "one billion, five hundred forty million, three hundred sixty-eight thousand, three hundred seventy-three".