1378147902 has 32 divisors (see below), whose sum is σ = 2881550592. Its totient is φ = 438582144.

The previous prime is 1378147861. The next prime is 1378147907. The reversal of 1378147902 is 2097418731.

1378147902 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378147907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66358 + ... + 84614.

It is an arithmetic number, because the mean of its divisors is an integer number (90048456).

Almost surely, 2^1378147902 is an apocalyptic number.

1378147902 is an abundant number, since it is smaller than the sum of its proper divisors (1503402690).

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

1378147902 is a wasteful number, since it uses less digits than its factorization.

1378147902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18832.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 1378147902 is about 37123.4144711932. The cubic root of 1378147902 is about 1112.8379889938.

The spelling of 1378147902 in words is "one billion, three hundred seventy-eight million, one hundred forty-seven thousand, nine hundred two".