1009998974 has 4 divisors (see below), whose sum is σ = 1514998464. Its totient is φ = 504999486.

The previous prime is 1009998973. The next prime is 1009998991. The reversal of 1009998974 is 4798999001.

It is a semiprime because it is the product of two 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 (1009998971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252499742 + ... + 252499745.

It is an arithmetic number, because the mean of its divisors is an integer number (378749616).

Almost surely, 2^1009998974 is an apocalyptic number.

1009998974 is a deficient number, since it is larger than the sum of its proper divisors (504999490).

1009998974 is an equidigital number, since it uses as much as digits as its factorization.

1009998974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504999489.

The product of its (nonzero) digits is 1469664, while the sum is 56.

The square root of 1009998974 is about 31780.4810221620. The cubic root of 1009998974 is about 1003.3219438031.

The spelling of 1009998974 in words is "one billion, nine million, nine hundred ninety-eight thousand, nine hundred seventy-four".