998946810 has 64 divisors (see below), whose sum is σ = 2779695360. Its totient is φ = 254802240.

The previous prime is 998946791. The next prime is 998946811. The reversal of 998946810 is 18649899.

998946810 is a `hidden beast` number, since 99 + 89 + 468 + 10 = 666.

It is a super-2 number, since 2×998946810² = 1995789458418352200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (998946811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74221 + ... + 86640.

It is an arithmetic number, because the mean of its divisors is an integer number (43432740).

Almost surely, 2^998946810 is an apocalyptic number.

998946810 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

998946810 is an abundant number, since it is smaller than the sum of its proper divisors (1780748550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

998946810 is a wasteful number, since it uses less digits than its factorization.

998946810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160900 (or 160894 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 998946810 is about 31606.1198187946. The cubic root of 998946810 is about 999.6488133490.

The spelling of 998946810 in words is "nine hundred ninety-eight million, nine hundred forty-six thousand, eight hundred ten".