1377738148 has 24 divisors (see below), whose sum is σ = 2496586680. Its totient is φ = 664473600.

The previous prime is 1377738139. The next prime is 1377738209. The reversal of 1377738148 is 8418377731.

It can be written as a sum of positive squares in 4 ways, for example, as 782768484 + 594969664 = 27978^2 + 24392^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128598 + ... + 138898.

It is an arithmetic number, because the mean of its divisors is an integer number (104024445).

Almost surely, 2^1377738148 is an apocalyptic number.

It is an amenable number.

1377738148 is a deficient number, since it is larger than the sum of its proper divisors (1118848532).

1377738148 is a wasteful number, since it uses less digits than its factorization.

1377738148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11487 (or 11485 counting only the distinct ones).

The product of its digits is 790272, while the sum is 49.

The square root of 1377738148 is about 37117.8952528292. The cubic root of 1377738148 is about 1112.7276875726.

The spelling of 1377738148 in words is "one billion, three hundred seventy-seven million, seven hundred thirty-eight thousand, one hundred forty-eight".