1384920881 has 16 divisors (see below), whose sum is σ = 1426718208. Its totient is φ = 1343865600.

The previous prime is 1384920869. The next prime is 1384920893. The reversal of 1384920881 is 1880294831.

It is an interprime number because it is at equal distance from previous prime (1384920869) and next prime (1384920893).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1384920881 is a prime.

It is a super-2 number, since 2×1384920881² = 3836011693259632322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1384920821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2281280 + ... + 2281886.

It is an arithmetic number, because the mean of its divisors is an integer number (89169888).

Almost surely, 2^1384920881 is an apocalyptic number.

It is an amenable number.

1384920881 is a deficient number, since it is larger than the sum of its proper divisors (41797327).

1384920881 is a wasteful number, since it uses less digits than its factorization.

1384920881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112.

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 1384920881 is about 37214.5251346836. The cubic root of 1384920881 is about 1114.6580439035.

The spelling of 1384920881 in words is "one billion, three hundred eighty-four million, nine hundred twenty thousand, eight hundred eighty-one".