1398002000 has 40 divisors (see below), whose sum is σ = 3380373672. Its totient is φ = 559200000.

The previous prime is 1398001963. The next prime is 1398002003. The reversal of 1398002000 is 2008931.

It can be written as a sum of positive squares in 4 ways, for example, as 49056016 + 1348945984 = 7004^2 + 36728^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398002003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347501 + ... + 351500.

Almost surely, 2^1398002000 is an apocalyptic number.

1398002000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1398002000 is an abundant number, since it is smaller than the sum of its proper divisors (1982371672).

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

1398002000 is an equidigital number, since it uses as much as digits as its factorization.

1398002000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699024 (or 699008 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1398002000 is about 37389.8649369050. The cubic root of 1398002000 is about 1118.1565124056.

The spelling of 1398002000 in words is "one billion, three hundred ninety-eight million, two thousand".