1906144904386 has 16 divisors (see below), whose sum is σ = 2962604973240. Its totient is φ = 918716444800.

The previous prime is 1906144904353. The next prime is 1906144904429. The reversal of 1906144904386 is 6834094416091.

It can be written as a sum of positive squares in 4 ways, for example, as 1648319609161 + 257825295225 = 1283869^2 + 507765^2 .

It is a super-3 number, since 3×1906144904386³ (a number of 38 digits) contains 333 as substring.

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, 26596765 + ... + 26668336.

Almost surely, 2^{1906144904386} is an apocalyptic number.

1906144904386 is a deficient number, since it is larger than the sum of its proper divisors (1056460068854).

1906144904386 is a wasteful number, since it uses less digits than its factorization.

1906144904386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53265749.

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 1906144904386 in words is "one trillion, nine hundred six billion, one hundred forty-four million, nine hundred four thousand, three hundred eighty-six".