1973138552 has 32 divisors (see below), whose sum is σ = 4612533120. Its totient is φ = 768755040.

The previous prime is 1973138533. The next prime is 1973138597. The reversal of 1973138552 is 2558313791.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

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, 1600958 + ... + 1602189.

It is an arithmetic number, because the mean of its divisors is an integer number (144141660).

Almost surely, 2^1973138552 is an apocalyptic number.

It is an amenable number.

1973138552 is an abundant number, since it is smaller than the sum of its proper divisors (2639394568).

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

1973138552 is a wasteful number, since it uses less digits than its factorization.

1973138552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203171 (or 3203167 counting only the distinct ones).

The product of its digits is 226800, while the sum is 44.

The square root of 1973138552 is about 44420.0242233162. The cubic root of 1973138552 is about 1254.2550569173.

The spelling of 1973138552 in words is "one billion, nine hundred seventy-three million, one hundred thirty-eight thousand, five hundred fifty-two".