1237998998 has 8 divisors (see below), whose sum is σ = 1954735320. Its totient is φ = 586420560.

The previous prime is 1237998997. The next prime is 1237999003. The reversal of 1237998998 is 8998997321.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1237998997) 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, 16289423 + ... + 16289498.

It is an arithmetic number, because the mean of its divisors is an integer number (244341915).

Almost surely, 2^1237998998 is an apocalyptic number.

1237998998 is a deficient number, since it is larger than the sum of its proper divisors (716736322).

1237998998 is a wasteful number, since it uses less digits than its factorization.

1237998998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32578942.

The product of its digits is 17635968, while the sum is 65.

The square root of 1237998998 is about 35185.2099325839. The cubic root of 1237998998 is about 1073.7588699071.

The spelling of 1237998998 in words is "one billion, two hundred thirty-seven million, nine hundred ninety-eight thousand, nine hundred ninety-eight".