1378149216 has 48 divisors (see below), whose sum is σ = 3641637888. Its totient is φ = 456336000.

The previous prime is 1378149203. The next prime is 1378149221. The reversal of 1378149216 is 6129418731.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1378149216² = 3798590523122829312, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 33040 + ... + 62031.

It is an arithmetic number, because the mean of its divisors is an integer number (75867456).

Almost surely, 2^1378149216 is an apocalyptic number.

1378149216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1378149216 is an abundant number, since it is smaller than the sum of its proper divisors (2263488672).

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

1378149216 is a wasteful number, since it uses less digits than its factorization.

1378149216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95235 (or 95227 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 1378149216 is about 37123.4321689146. The cubic root of 1378149216 is about 1112.8383426735.

The spelling of 1378149216 in words is "one billion, three hundred seventy-eight million, one hundred forty-nine thousand, two hundred sixteen".