1540122380 has 24 divisors (see below), whose sum is σ = 3275200320. Its totient is φ = 608250240.

The previous prime is 1540122379. The next prime is 1540122427. The reversal of 1540122380 is 832210451.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485801 + ... + 488960.

It is an arithmetic number, because the mean of its divisors is an integer number (136466680).

Almost surely, 2^1540122380 is an apocalyptic number.

1540122380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1540122380 is an abundant number, since it is smaller than the sum of its proper divisors (1735077940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1540122380 is a wasteful number, since it uses less digits than its factorization.

1540122380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974849 (or 974847 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1540122380 is about 39244.3929753029. The cubic root of 1540122380 is about 1154.8309391927.

The spelling of 1540122380 in words is "one billion, five hundred forty million, one hundred twenty-two thousand, three hundred eighty".