1386998958 has 16 divisors (see below), whose sum is σ = 2937174480. Its totient is φ = 435136896.

The previous prime is 1386998911. The next prime is 1386999001. The reversal of 1386998958 is 8598996831.

It is a super-2 number, since 2×1386998958² = 3847532218986171528, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6798913 + ... + 6799116.

It is an arithmetic number, because the mean of its divisors is an integer number (183573405).

Almost surely, 2^1386998958 is an apocalyptic number.

1386998958 is an abundant number, since it is smaller than the sum of its proper divisors (1550175522).

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

1386998958 is a wasteful number, since it uses less digits than its factorization.

1386998958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13598051.

The product of its digits is 33592320, while the sum is 66.

The square root of 1386998958 is about 37242.4349096565. The cubic root of 1386998958 is about 1115.2152809462.

The spelling of 1386998958 in words is "one billion, three hundred eighty-six million, nine hundred ninety-eight thousand, nine hundred fifty-eight".