1973549660 has 48 divisors (see below), whose sum is σ = 4283829984. Its totient is φ = 763147008.

The previous prime is 1973549651. The next prime is 1973549663. The reversal of 1973549660 is 669453791.

It is a super-2 number, since 2×1973549660² = 7789796520972231200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1973549599 and 1973549608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1973549663) 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, 107687 + ... + 124673.

It is an arithmetic number, because the mean of its divisors is an integer number (89246458).

Almost surely, 2^1973549660 is an apocalyptic number.

1973549660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1973549660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2141914992).

1973549660 is an abundant number, since it is smaller than the sum of its proper divisors (2310280324).

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

1973549660 is a wasteful number, since it uses less digits than its factorization.

1973549660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17190 (or 17188 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 50.

The square root of 1973549660 is about 44424.6514899104. The cubic root of 1973549660 is about 1254.3421598529.

The spelling of 1973549660 in words is "one billion, nine hundred seventy-three million, five hundred forty-nine thousand, six hundred sixty".