1387671053 has 4 divisors (see below), whose sum is σ = 1469298780. Its totient is φ = 1306043328.

The previous prime is 1387671049. The next prime is 1387671119. The reversal of 1387671053 is 3501767831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3501767831 = 17 ⋅205986343.

It can be written as a sum of positive squares in 2 ways, for example, as 501894409 + 885776644 = 22403^2 + 29762^2 .

It is a cyclic number.

It is not a de Polignac number, because 1387671053 - 2² = 1387671049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1387671053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387601053) 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, 40813838 + ... + 40813871.

It is an arithmetic number, because the mean of its divisors is an integer number (367324695).

Almost surely, 2^1387671053 is an apocalyptic number.

It is an amenable number.

1387671053 is a deficient number, since it is larger than the sum of its proper divisors (81627727).

1387671053 is an equidigital number, since it uses as much as digits as its factorization.

1387671053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81627726.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 1387671053 is about 37251.4570587514. The cubic root of 1387671053 is about 1115.3953843213.

The spelling of 1387671053 in words is "one billion, three hundred eighty-seven million, six hundred seventy-one thousand, fifty-three".