1381000960 has 144 divisors (see below), whose sum is σ = 3512900160. Its totient is φ = 519045120.

The previous prime is 1381000939. The next prime is 1381000969. The reversal of 1381000960 is 690001831.

1381000960 = T₃₀₃₄₁ + T₃₀₃₄₂ + T₃₀₃₄₃.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381000969) 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, 1795456 + ... + 1796224.

It is an arithmetic number, because the mean of its divisors is an integer number (24395140).

Almost surely, 2^1381000960 is an apocalyptic number.

1381000960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1381000960 is the 30343-rd centered triangular number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1381000960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1756450080).

1381000960 is an abundant number, since it is smaller than the sum of its proper divisors (2131899200).

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

1381000960 is an equidigital number, since it uses as much as digits as its factorization.

1381000960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1381000960 is about 37161.8212686085. The cubic root of 1381000960 is about 1113.6053964375.

The spelling of 1381000960 in words is "one billion, three hundred eighty-one million, nine hundred sixty", and thus it is an aban number.