1378217151 has 12 divisors (see below), whose sum is σ = 2018029728. Its totient is φ = 906224544.

The previous prime is 1378217089. The next prime is 1378217171. The reversal of 1378217151 is 1517128731.

It is not a de Polignac number, because 1378217151 - 2⁷ = 1378217023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378217171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1048215 + ... + 1049528.

It is an arithmetic number, because the mean of its divisors is an integer number (168169144).

Almost surely, 2^1378217151 is an apocalyptic number.

1378217151 is a deficient number, since it is larger than the sum of its proper divisors (639812577).

1378217151 is a wasteful number, since it uses less digits than its factorization.

1378217151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097822 (or 2097819 counting only the distinct ones).

The product of its digits is 11760, while the sum is 36.

The square root of 1378217151 is about 37124.3471457748. The cubic root of 1378217151 is about 1112.8566279287.

The spelling of 1378217151 in words is "one billion, three hundred seventy-eight million, two hundred seventeen thousand, one hundred fifty-one".