1949121597480 has 64 divisors (see below), whose sum is σ = 5860869255360. Its totient is φ = 518565362688.

The previous prime is 1949121597473. The next prime is 1949121597569. The reversal of 1949121597480 is 847951219491.

It is a Harshad number since it is a multiple of its sum of digits (60).

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 15 ways as a sum of consecutive naturals, for example, 18704022 + ... + 18807941.

It is an arithmetic number, because the mean of its divisors is an integer number (91576082115).

Almost surely, 2^{1949121597480} is an apocalyptic number.

1949121597480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1949121597480 is an abundant number, since it is smaller than the sum of its proper divisors (3911747657880).

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

1949121597480 is a wasteful number, since it uses less digits than its factorization.

1949121597480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37512410 (or 37512406 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 60.

The spelling of 1949121597480 in words is "one trillion, nine hundred forty-nine billion, one hundred twenty-one million, five hundred ninety-seven thousand, four hundred eighty".