1540634930 has 8 divisors (see below), whose sum is σ = 2773142892. Its totient is φ = 616253968.

The previous prime is 1540634903. The next prime is 1540634933. The reversal of 1540634930 is 394360451.

It is a happy number.

1540634930 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1536875209 + 3759721 = 39203^2 + 1939^2 .

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

It is a super-2 number, since 2×1540634930² = 4747111975072209800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1540634933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77031737 + ... + 77031756.

Almost surely, 2^1540634930 is an apocalyptic number.

1540634930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1540634930 is a deficient number, since it is larger than the sum of its proper divisors (1232507962).

1540634930 is a wasteful number, since it uses less digits than its factorization.

1540634930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154063500.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 1540634930 is about 39250.9226643145. The cubic root of 1540634930 is about 1154.9590335476.

The spelling of 1540634930 in words is "one billion, five hundred forty million, six hundred thirty-four thousand, nine hundred thirty".