1378061167 has 16 divisors (see below), whose sum is σ = 1591744000. Its totient is φ = 1168616160.

The previous prime is 1378061161. The next prime is 1378061173. The reversal of 1378061167 is 7611608731.

It is an interprime number because it is at equal distance from previous prime (1378061161) and next prime (1378061173).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1378061167 is a prime.

It is a super-3 number, since 3×1378061167³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378061161) 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, 984334 + ... + 985732.

It is an arithmetic number, because the mean of its divisors is an integer number (99484000).

Almost surely, 2^1378061167 is an apocalyptic number.

1378061167 is a deficient number, since it is larger than the sum of its proper divisors (213682833).

1378061167 is a wasteful number, since it uses less digits than its factorization.

1378061167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2806.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 1378061167 is about 37122.2462547729. The cubic root of 1378061167 is about 1112.8146426781.

Adding to 1378061167 its reverse (7611608731), we get a palindrome (8989669898).

It can be divided in two parts, 13780 and 61167, that added together give a palindrome (74947).

The spelling of 1378061167 in words is "one billion, three hundred seventy-eight million, sixty-one thousand, one hundred sixty-seven".