1398461655 has 48 divisors (see below), whose sum is σ = 2385815904. Its totient is φ = 699321600.

The previous prime is 1398461639. The next prime is 1398461681. The reversal of 1398461655 is 5561648931.

It is not a de Polignac number, because 1398461655 - 2⁴ = 1398461639 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 545637 + ... + 548193.

It is an arithmetic number, because the mean of its divisors is an integer number (49704498).

Almost surely, 2^1398461655 is an apocalyptic number.

1398461655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1398461655 is a deficient number, since it is larger than the sum of its proper divisors (987354249).

1398461655 is a wasteful number, since it uses less digits than its factorization.

1398461655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2704 (or 2685 counting only the distinct ones).

The product of its digits is 777600, while the sum is 48.

The square root of 1398461655 is about 37396.0112177756. The cubic root of 1398461655 is about 1118.2790467826.

The spelling of 1398461655 in words is "one billion, three hundred ninety-eight million, four hundred sixty-one thousand, six hundred fifty-five".