1377533444 has 12 divisors (see below), whose sum is σ = 2755066944. Its totient is φ = 590371464.

The previous prime is 1377533407. The next prime is 1377533449. The reversal of 1377533444 is 4443357731.

1377533444 is an admirable number.

It is a super-2 number, since 2×1377533444² = 3795196778677002272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1377533449) 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, 24598784 + ... + 24598839.

It is an arithmetic number, because the mean of its divisors is an integer number (229588912).

Almost surely, 2^1377533444 is an apocalyptic number.

1377533444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1377533444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1377533444 is a wasteful number, since it uses less digits than its factorization.

1377533444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49197634 (or 49197632 counting only the distinct ones).

The product of its digits is 423360, while the sum is 41.

The square root of 1377533444 is about 37115.1376664563. The cubic root of 1377533444 is about 1112.6725752396.

The spelling of 1377533444 in words is "one billion, three hundred seventy-seven million, five hundred thirty-three thousand, four hundred forty-four".