1906878499264 has 56 divisors (see below), whose sum is σ = 3823750869120. Its totient is φ = 943428505344.

The previous prime is 1906878499259. The next prime is 1906878499289. The reversal of 1906878499264 is 4629948786091.

It is a super-2 number, since 2×1906878499264² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8184447 + ... + 8414209.

It is an arithmetic number, because the mean of its divisors is an integer number (68281265520).

Almost surely, 2^{1906878499264} 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 1906878499264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1911875434560).

1906878499264 is an abundant number, since it is smaller than the sum of its proper divisors (1916872369856).

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

1906878499264 is a wasteful number, since it uses less digits than its factorization.

1906878499264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231137 (or 231127 counting only the distinct ones).

The product of its (nonzero) digits is 376233984, while the sum is 73.

The spelling of 1906878499264 in words is "one trillion, nine hundred six billion, eight hundred seventy-eight million, four hundred ninety-nine thousand, two hundred sixty-four".