1540663730 has 16 divisors (see below), whose sum is σ = 2862653184. Its totient is φ = 596385840.

The previous prime is 1540663673. The next prime is 1540663741. The reversal of 1540663730 is 373660451.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2484632 + ... + 2485251.

It is an arithmetic number, because the mean of its divisors is an integer number (178915824).

Almost surely, 2^1540663730 is an apocalyptic number.

1540663730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1540663730 is a deficient number, since it is larger than the sum of its proper divisors (1321989454).

1540663730 is a wasteful number, since it uses less digits than its factorization.

1540663730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4969921.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 1540663730 is about 39251.2895329567. The cubic root of 1540663730 is about 1154.9662302802.

The spelling of 1540663730 in words is "one billion, five hundred forty million, six hundred sixty-three thousand, seven hundred thirty".