1398505146 has 32 divisors (see below), whose sum is σ = 2947430400. Its totient is φ = 441151920.

The previous prime is 1398505109. The next prime is 1398505177. The reversal of 1398505146 is 6415058931.

It is a junction number, because it is equal to n+sod(n) for n = 1398505098 and 1398505107.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106785 + ... + 119163.

It is an arithmetic number, because the mean of its divisors is an integer number (92107200).

Almost surely, 2^1398505146 is an apocalyptic number.

1398505146 is an abundant number, since it is smaller than the sum of its proper divisors (1548925254).

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

1398505146 is a wasteful number, since it uses less digits than its factorization.

1398505146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13394.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 1398505146 is about 37396.5927057533. The cubic root of 1398505146 is about 1118.2906391800.

The spelling of 1398505146 in words is "one billion, three hundred ninety-eight million, five hundred five thousand, one hundred forty-six".