1798680242 has 6 divisors (see below), whose sum is σ = 2698110333. Its totient is φ = 899310132.

The previous prime is 1798680217. The next prime is 1798680281. The reversal of 1798680242 is 2420868971.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1523418961 + 275261281 = 39031^2 + 16591^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=29989.

It is a super-2 number, since 2×1798680242² = 6470501225922357128, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 44984 + ... + 74972.

Almost surely, 2^1798680242 is an apocalyptic number.

1798680242 is a deficient number, since it is larger than the sum of its proper divisors (899430091).

1798680242 is an frugal number, since it uses more digits than its factorization.

1798680242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59980 (or 29991 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 1798680242 is about 42410.8505220067. The cubic root of 1798680242 is about 1216.1430288426.

The spelling of 1798680242 in words is "one billion, seven hundred ninety-eight million, six hundred eighty thousand, two hundred forty-two".