1378352500 has 120 divisors (see below), whose sum is σ = 3491882240. Its totient is φ = 466128000.

The previous prime is 1378352491. The next prime is 1378352509. The reversal of 1378352500 is 52538731.

It is an interprime number because it is at equal distance from previous prime (1378352491) and next prime (1378352509).

It is a super-2 number, since 2×1378352500² = 3799711228512500000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378352509) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1382002 + ... + 1382998.

Almost surely, 2^1378352500 is an apocalyptic number.

1378352500 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 1378352500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1745941120).

1378352500 is an abundant number, since it is smaller than the sum of its proper divisors (2113529740).

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

1378352500 is an equidigital number, since it uses as much as digits as its factorization.

1378352500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107 (or 1090 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 1378352500 is about 37126.1700152332. The cubic root of 1378352500 is about 1112.8930564168.

The spelling of 1378352500 in words is "one billion, three hundred seventy-eight million, three hundred fifty-two thousand, five hundred".