1540136372 has 6 divisors (see below), whose sum is σ = 2695238658. Its totient is φ = 770068184.

The previous prime is 1540136329. The next prime is 1540136383. The reversal of 1540136372 is 2736310451.

It can be written as a sum of positive squares in only one way, i.e., 1356154276 + 183982096 = 36826^2 + 13564^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192517043 + ... + 192517050.

It is an arithmetic number, because the mean of its divisors is an integer number (449206443).

Almost surely, 2^1540136372 is an apocalyptic number.

It is an amenable number.

1540136372 is a deficient number, since it is larger than the sum of its proper divisors (1155102286).

1540136372 is a wasteful number, since it uses less digits than its factorization.

1540136372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385034097 (or 385034095 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 1540136372 is about 39244.5712424024. The cubic root of 1540136372 is about 1154.8344363922.

The spelling of 1540136372 in words is "one billion, five hundred forty million, one hundred thirty-six thousand, three hundred seventy-two".