1906098638 has 4 divisors (see below), whose sum is σ = 2859147960. Its totient is φ = 953049318.

The previous prime is 1906098637. The next prime is 1906098647. The reversal of 1906098638 is 8368906091.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906098637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 476524658 + ... + 476524661.

It is an arithmetic number, because the mean of its divisors is an integer number (714786990).

Almost surely, 2^1906098638 is an apocalyptic number.

1906098638 is a deficient number, since it is larger than the sum of its proper divisors (953049322).

1906098638 is an equidigital number, since it uses as much as digits as its factorization.

1906098638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953049321.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 1906098638 is about 43658.8895644404. The cubic root of 1906098638 is about 1239.8860973246.

The spelling of 1906098638 in words is "one billion, nine hundred six million, ninety-eight thousand, six hundred thirty-eight".