1540630655 has 8 divisors (see below), whose sum is σ = 1912507200. Its totient is φ = 1190004256.

The previous prime is 1540630649. The next prime is 1540630657. The reversal of 1540630655 is 5560360451.

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

It is a cyclic number.

It is not a de Polignac number, because 1540630655 - 2³⁰ = 466888831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540630657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5312375 + ... + 5312664.

It is an arithmetic number, because the mean of its divisors is an integer number (239063400).

Almost surely, 2^1540630655 is an apocalyptic number.

1540630655 is a deficient number, since it is larger than the sum of its proper divisors (371876545).

1540630655 is a wasteful number, since it uses less digits than its factorization.

1540630655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10625073.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 1540630655 is about 39250.8682069582. The cubic root of 1540630655 is about 1154.9579652749.

The spelling of 1540630655 in words is "one billion, five hundred forty million, six hundred thirty thousand, six hundred fifty-five".