1351898784 has 144 divisors (see below), whose sum is σ = 4029480000. Its totient is φ = 429124608.

The previous prime is 1351898783. The next prime is 1351898789. The reversal of 1351898784 is 4878981531.

It is a tau number, because it is divible by the number of its divisors (144).

It is a self number, because there is not a number n which added to its sum of digits gives 1351898784.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351898783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2708967 + ... + 2709465.

It is an arithmetic number, because the mean of its divisors is an integer number (27982500).

Almost surely, 2^1351898784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1351898784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2014740000).

1351898784 is an abundant number, since it is smaller than the sum of its proper divisors (2677581216).

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

1351898784 is a wasteful number, since it uses less digits than its factorization.

1351898784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947 (or 936 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The square root of 1351898784 is about 36768.1762397865. The cubic root of 1351898784 is about 1105.7273683355.

The spelling of 1351898784 in words is "one billion, three hundred fifty-one million, eight hundred ninety-eight thousand, seven hundred eighty-four".