1984795154 has 8 divisors (see below), whose sum is σ = 2978421708. Its totient is φ = 991987920.

The previous prime is 1984795151. The next prime is 1984795159. The reversal of 1984795154 is 4515974891.

It can be written as a sum of positive squares in 2 ways, for example, as 1982475625 + 2319529 = 44525^2 + 1523^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1984795096 and 1984795105.

It is not an unprimeable number, because it can be changed into a prime (1984795151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198737 + ... + 208484.

Almost surely, 2^1984795154 is an apocalyptic number.

1984795154 is a deficient number, since it is larger than the sum of its proper divisors (993626554).

1984795154 is a wasteful number, since it uses less digits than its factorization.

1984795154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409660.

The product of its digits is 1814400, while the sum is 53.

The square root of 1984795154 is about 44551.0398756303. The cubic root of 1984795154 is about 1256.7201069083.

The spelling of 1984795154 in words is "one billion, nine hundred eighty-four million, seven hundred ninety-five thousand, one hundred fifty-four".