1953378 has 48 divisors (see below), whose sum is σ = 4979520. Its totient is φ = 541728.

The previous prime is 1953373. The next prime is 1953379. The reversal of 1953378 is 8733591.

It is a super-2 number, since 2×1953378² = 7631371221768, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1953373) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4453 + ... + 4871.

It is an arithmetic number, because the mean of its divisors is an integer number (103740).

2^1953378 is an apocalyptic number.

1953378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1953378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2489760).

1953378 is an abundant number, since it is smaller than the sum of its proper divisors (3026142).

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

1953378 is a wasteful number, since it uses less digits than its factorization.

1953378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 468 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 1953378 is about 1397.6329990380. The cubic root of 1953378 is about 125.0053971003.

The spelling of 1953378 in words is "one million, nine hundred fifty-three thousand, three hundred seventy-eight".