2146378354 has 12 divisors (see below), whose sum is σ = 3365636526. Its totient is φ = 1026528272.

The previous prime is 2146378349. The next prime is 2146378357. The reversal of 2146378354 is 4538736412.

It can be written as a sum of positive squares in only one way, i.e., 1352547729 + 793830625 = 36777^2 + 28175^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2146378354.

It is not an unprimeable number, because it can be changed into a prime (2146378357) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1013299 + ... + 1015414.

Almost surely, 2^2146378354 is an apocalyptic number.

2146378354 is a deficient number, since it is larger than the sum of its proper divisors (1219258172).

2146378354 is a wasteful number, since it uses less digits than its factorization.

2146378354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028761 (or 2028738 counting only the distinct ones).

The product of its digits is 483840, while the sum is 43.

The square root of 2146378354 is about 46329.0228042854. The cubic root of 2146378354 is about 1289.9377719717.

The spelling of 2146378354 in words is "two billion, one hundred forty-six million, three hundred seventy-eight thousand, three hundred fifty-four".