1486978398 has 40 divisors (see below), whose sum is σ = 3334218888. Its totient is φ = 495319536.

The previous prime is 1486978373. The next prime is 1486978403. The reversal of 1486978398 is 8938796841.

It is a super-2 number, since 2×1486978398² = 4422209512237292808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 369465 + ... + 373467.

Almost surely, 2^1486978398 is an apocalyptic number.

1486978398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1486978398 is an abundant number, since it is smaller than the sum of its proper divisors (1847240490).

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

1486978398 is a wasteful number, since it uses less digits than its factorization.

1486978398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6310 (or 6301 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The square root of 1486978398 is about 38561.3588712846. The cubic root of 1486978398 is about 1141.3921634694.

The spelling of 1486978398 in words is "one billion, four hundred eighty-six million, nine hundred seventy-eight thousand, three hundred ninety-eight".