2051551198 has 8 divisors (see below), whose sum is σ = 3079325808. Its totient is φ = 1025109264.

The previous prime is 2051551181. The next prime is 2051551241. The reversal of 2051551198 is 8911551502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329311 + ... + 335482.

It is an arithmetic number, because the mean of its divisors is an integer number (384915726).

Almost surely, 2^2051551198 is an apocalyptic number.

2051551198 is a deficient number, since it is larger than the sum of its proper divisors (1027774610).

2051551198 is a wasteful number, since it uses less digits than its factorization.

2051551198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666338.

The product of its (nonzero) digits is 18000, while the sum is 37.

The square root of 2051551198 is about 45294.0525676385. The cubic root of 2051551198 is about 1270.6544249495.

The spelling of 2051551198 in words is "two billion, fifty-one million, five hundred fifty-one thousand, one hundred ninety-eight".