1381616878084 has 9 divisors (see below), whose sum is σ = 2417833650631. Its totient is φ = 690807263620.

The previous prime is 1381616878073. The next prime is 1381616878091. The reversal of 1381616878084 is 4808786161831.

The square root of 1381616878084 is 1175422.

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

It is a super-2 number, since 2×1381616878084² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2056989 + ... + 2644699.

Almost surely, 2^{1381616878084} is an apocalyptic number.

1381616878084 is the 1175422-nd square number.

It is an amenable number.

1381616878084 is a deficient number, since it is larger than the sum of its proper divisors (1036216772547).

1381616878084 is an frugal number, since it uses more digits than its factorization.

1381616878084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175426 (or 587713 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 61.

The spelling of 1381616878084 in words is "one trillion, three hundred eighty-one billion, six hundred sixteen million, eight hundred seventy-eight thousand, eighty-four".