1540721050 has 96 divisors (see below), whose sum is σ = 3326572800. Its totient is φ = 524697600.

The previous prime is 1540721029. The next prime is 1540721099. The reversal of 1540721050 is 501270451.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 47 ways as a sum of consecutive naturals, for example, 3431226 + ... + 3431674.

It is an arithmetic number, because the mean of its divisors is an integer number (34651800).

Almost surely, 2^1540721050 is an apocalyptic number.

1540721050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1540721050 is an abundant number, since it is smaller than the sum of its proper divisors (1785851750).

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

1540721050 is a wasteful number, since it uses less digits than its factorization.

1540721050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 1540721050 is about 39252.0196932591. The cubic root of 1540721050 is about 1154.9805535103.

The spelling of 1540721050 in words is "one billion, five hundred forty million, seven hundred twenty-one thousand, fifty".