1906481608516 has 9 divisors (see below), whose sum is σ = 3336347647549. Its totient is φ = 953239423504.

The previous prime is 1906481608477. The next prime is 1906481608573. The reversal of 1906481608516 is 6158061846091.

The square root of 1906481608516 is 1380754.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1871998604100 + 34483004416 = 1368210^2 + 185696^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2416320 + ... + 3106696.

Almost surely, 2^{1906481608516} is an apocalyptic number.

1906481608516 is the 1380754-th square number.

It is an amenable number.

1906481608516 is a deficient number, since it is larger than the sum of its proper divisors (1429866039033).

1906481608516 is an frugal number, since it uses more digits than its factorization.

1906481608516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380758 (or 690379 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 1906481608516 in words is "one trillion, nine hundred six billion, four hundred eighty-one million, six hundred eight thousand, five hundred sixteen".