1906615464 has 64 divisors (see below), whose sum is σ = 5143824000. Its totient is φ = 585436416.

The previous prime is 1906615441. The next prime is 1906615471. The reversal of 1906615464 is 4645166091.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150862 + ... + 163010.

It is an arithmetic number, because the mean of its divisors is an integer number (80372250).

Almost surely, 2^1906615464 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 1906615464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2571912000).

1906615464 is an abundant number, since it is smaller than the sum of its proper divisors (3237208536).

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

1906615464 is a wasteful number, since it uses less digits than its factorization.

1906615464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12674 (or 12670 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 1906615464 is about 43664.8080724054. The cubic root of 1906615464 is about 1239.9981494943.

The spelling of 1906615464 in words is "one billion, nine hundred six million, six hundred fifteen thousand, four hundred sixty-four".