1912154004 has 72 divisors (see below), whose sum is σ = 4917083808. Its totient is φ = 626408640.

The previous prime is 1912154003. The next prime is 1912154011. The reversal of 1912154004 is 4004512191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1912154003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1632339 + ... + 1633509.

Almost surely, 2^1912154004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1912154004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2458541904).

1912154004 is an abundant number, since it is smaller than the sum of its proper divisors (3004929804).

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

1912154004 is a wasteful number, since it uses less digits than its factorization.

1912154004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925 (or 1920 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1912154004 is about 43728.1831774429. The cubic root of 1912154004 is about 1241.1976817030.

Adding to 1912154004 its reverse (4004512191), we get a palindrome (5916666195).

The spelling of 1912154004 in words is "one billion, nine hundred twelve million, one hundred fifty-four thousand, four".