1906290128 has 10 divisors (see below), whose sum is σ = 3693437154. Its totient is φ = 953145056.

The previous prime is 1906290109. The next prime is 1906290149. The reversal of 1906290128 is 8210926091.

It can be written as a sum of positive squares in only one way, i.e., 1184185744 + 722104384 = 34412^2 + 26872^2 .

It is a super-2 number, since 2×1906290128² = 7267884104220512768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1906290091 and 1906290100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59571551 + ... + 59571582.

Almost surely, 2^1906290128 is an apocalyptic number.

It is an amenable number.

1906290128 is a deficient number, since it is larger than the sum of its proper divisors (1787147026).

1906290128 is a wasteful number, since it uses less digits than its factorization.

1906290128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119143141 (or 119143135 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 1906290128 is about 43661.0825335332. The cubic root of 1906290128 is about 1239.9276163089.

The spelling of 1906290128 in words is "one billion, nine hundred six million, two hundred ninety thousand, one hundred twenty-eight".