851672098 has 4 divisors (see below), whose sum is σ = 1277508150. Its totient is φ = 425836048.

The previous prime is 851672089. The next prime is 851672099. The reversal of 851672098 is 890276158.

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

It can be written as a sum of positive squares in only one way, i.e., 672727969 + 178944129 = 25937^2 + 13377^2 .

It is not an unprimeable number, because it can be changed into a prime (851672099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212918023 + ... + 212918026.

Almost surely, 2^851672098 is an apocalyptic number.

851672098 is a deficient number, since it is larger than the sum of its proper divisors (425836052).

851672098 is a wasteful number, since it uses less digits than its factorization.

851672098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425836051.

The product of its (nonzero) digits is 241920, while the sum is 46.

The square root of 851672098 is about 29183.4216294114. The cubic root of 851672098 is about 947.8889775151. Note that the first 3 decimals are identical.

The spelling of 851672098 in words is "eight hundred fifty-one million, six hundred seventy-two thousand, ninety-eight".