1895401340 has 144 divisors (see below), whose sum is σ = 4744793088. Its totient is φ = 634023936.

The previous prime is 1895401301. The next prime is 1895401351. The reversal of 1895401340 is 431045981.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1895401340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12072542 + ... + 12072698.

It is an arithmetic number, because the mean of its divisors is an integer number (32949952).

Almost surely, 2^1895401340 is an apocalyptic number.

1895401340 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 1895401340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2372396544).

1895401340 is an abundant number, since it is smaller than the sum of its proper divisors (2849391748).

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

1895401340 is a wasteful number, since it uses less digits than its factorization.

1895401340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1895401340 is about 43536.2072303043. The cubic root of 1895401340 is about 1237.5622720084.

The spelling of 1895401340 in words is "one billion, eight hundred ninety-five million, four hundred one thousand, three hundred forty".