1377612068 has 54 divisors (see below), whose sum is σ = 2974015926. Its totient is φ = 554811264.

The previous prime is 1377612059. The next prime is 1377612073. The reversal of 1377612068 is 8602167731.

It can be written as a sum of positive squares in only one way, i.e., 1296576064 + 81036004 = 36008^2 + 9002^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2142155 + ... + 2142797.

It is an arithmetic number, because the mean of its divisors is an integer number (55074369).

Almost surely, 2^1377612068 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1377612068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1487007963).

1377612068 is an abundant number, since it is smaller than the sum of its proper divisors (1596403858).

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

1377612068 is an equidigital number, since it uses as much as digits as its factorization.

1377612068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 1377612068 is about 37116.1968418102. The cubic root of 1377612068 is about 1112.6937437769.

Adding to 1377612068 its reverse (8602167731), we get a palindrome (9979779799).

The spelling of 1377612068 in words is "one billion, three hundred seventy-seven million, six hundred twelve thousand, sixty-eight".