1540137854 has 8 divisors (see below), whose sum is σ = 2317063008. Its totient is φ = 767783520.

The previous prime is 1540137847. The next prime is 1540137857. The reversal of 1540137854 is 4587310451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540137857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1141862 + ... + 1143209.

It is an arithmetic number, because the mean of its divisors is an integer number (289632876).

Almost surely, 2^1540137854 is an apocalyptic number.

1540137854 is a deficient number, since it is larger than the sum of its proper divisors (776925154).

1540137854 is a wasteful number, since it uses less digits than its factorization.

1540137854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285410.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 1540137854 is about 39244.5901239903. The cubic root of 1540137854 is about 1154.8348068062.

The spelling of 1540137854 in words is "one billion, five hundred forty million, one hundred thirty-seven thousand, eight hundred fifty-four".