1377001330849 has 9 divisors (see below), whose sum is σ = 1400017962681. Its totient is φ = 1354357131120.

The previous prime is 1377001330801. The next prime is 1377001330853. The reversal of 1377001330849 is 9480331007731.

The square root of 1377001330849 is 1173457.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1012871152225 + 364130178624 = 1006415^2 + 603432^2 .

It is not a de Polignac number, because 1377001330849 - 2²⁵ = 1376967776417 is a prime.

It is a super-2 number, since 2×1377001330849² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1377001330799 and 1377001330808.

It is not an unprimeable number, because it can be changed into a prime (1377001330889) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 71571259 + ... + 71590495.

It is an arithmetic number, because the mean of its divisors is an integer number (155557551409).

Almost surely, 2^{1377001330849} is an apocalyptic number.

1377001330849 is the 1173457-th square number.

1377001330849 is the 586729-th centered octagonal number.

It is an amenable number.

1377001330849 is a deficient number, since it is larger than the sum of its proper divisors (23016631832).

1377001330849 is an frugal number, since it uses more digits than its factorization.

1377001330849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38596 (or 19298 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 46.

The spelling of 1377001330849 in words is "one trillion, three hundred seventy-seven billion, one million, three hundred thirty thousand, eight hundred forty-nine".