19149312 has 160 divisors (see below), whose sum is σ = 63245952. Its totient is φ = 5013504.

The previous prime is 19149301. The next prime is 19149323. The reversal of 19149312 is 21394191.

It is an interprime number because it is at equal distance from previous prime (19149301) and next prime (19149323).

Its product of digits (1944) is a multiple of the sum of its prime divisors (162).

It is a self number, because there is not a number n which added to its sum of digits gives 19149312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139708 + ... + 139844.

Almost surely, 2^19149312 is an apocalyptic number.

19149312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19149312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31622976).

19149312 is an abundant number, since it is smaller than the sum of its proper divisors (44096640).

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

19149312 is a wasteful number, since it uses less digits than its factorization.

19149312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 162 counting only the distinct ones).

The product of its digits is 1944, while the sum is 30.

The square root of 19149312 is about 4375.9926873796. The cubic root of 19149312 is about 267.5373319662.

It can be divided in two parts, 19 and 149312, that added together give a triangular number (149331 = T₅₄₆).

The spelling of 19149312 in words is "nineteen million, one hundred forty-nine thousand, three hundred twelve".