1540196239740 has 48 divisors (see below), whose sum is σ = 4313021761440. Its totient is φ = 410674017280.

The previous prime is 1540196239717. The next prime is 1540196239741. The reversal of 1540196239740 is 479326910451.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540196239741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 851385 + ... + 1950704.

It is an arithmetic number, because the mean of its divisors is an integer number (89854620030).

Almost surely, 2^{1540196239740} is an apocalyptic number.

1540196239740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1540196239740 is an abundant number, since it is smaller than the sum of its proper divisors (2772825521700).

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

1540196239740 is a wasteful number, since it uses less digits than its factorization.

1540196239740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811262 (or 2811260 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 1540196239740 in words is "one trillion, five hundred forty billion, one hundred ninety-six million, two hundred thirty-nine thousand, seven hundred forty".