1245726998 has 8 divisors (see below), whose sum is σ = 1883304192. Its totient is φ = 617958936.

The previous prime is 1245726991. The next prime is 1245727013. The reversal of 1245726998 is 8996275421.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245726991) 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, 2451965 + ... + 2452472.

It is an arithmetic number, because the mean of its divisors is an integer number (235413024).

Almost surely, 2^1245726998 is an apocalyptic number.

1245726998 is a deficient number, since it is larger than the sum of its proper divisors (637577194).

1245726998 is a wasteful number, since it uses less digits than its factorization.

1245726998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4904566.

The product of its digits is 2177280, while the sum is 53.

The square root of 1245726998 is about 35294.8579540986. The cubic root of 1245726998 is about 1075.9884898784.

The spelling of 1245726998 in words is "one billion, two hundred forty-five million, seven hundred twenty-six thousand, nine hundred ninety-eight".