1387484786 has 8 divisors (see below), whose sum is σ = 2084591280. Its totient is φ = 692621028.

The previous prime is 1387484783. The next prime is 1387484789. The reversal of 1387484786 is 6874847831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1387484783) and next prime (1387484789).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1387484786² = 3850228062762931592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1387484783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559136 + ... + 561611.

It is an arithmetic number, because the mean of its divisors is an integer number (260573910).

Almost surely, 2^1387484786 is an apocalyptic number.

1387484786 is a deficient number, since it is larger than the sum of its proper divisors (697106494).

1387484786 is a wasteful number, since it uses less digits than its factorization.

1387484786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121368.

The product of its digits is 7225344, while the sum is 56.

The square root of 1387484786 is about 37248.9568444540. The cubic root of 1387484786 is about 1115.3454756035.

The spelling of 1387484786 in words is "one billion, three hundred eighty-seven million, four hundred eighty-four thousand, seven hundred eighty-six".