1373823990 has 160 divisors (see below), whose sum is σ = 4605790464. Its totient is φ = 285456960.

The previous prime is 1373823961. The next prime is 1373824007. The reversal of 1373823990 is 993283731.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 51357 + ... + 73383.

Almost surely, 2^1373823990 is an apocalyptic number.

1373823990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1373823990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2302895232).

1373823990 is an abundant number, since it is smaller than the sum of its proper divisors (3231966474).

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

1373823990 is a wasteful number, since it uses less digits than its factorization.

1373823990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22064 (or 22055 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 1373823990 is about 37065.1317278112. The cubic root of 1373823990 is about 1111.6729339125.

The spelling of 1373823990 in words is "one billion, three hundred seventy-three million, eight hundred twenty-three thousand, nine hundred ninety".