378453551 has 8 divisors (see below), whose sum is σ = 436978080. Its totient is φ = 321043968.

The previous prime is 378453547. The next prime is 378453557. The reversal of 378453551 is 155354873.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 378453551 - 2² = 378453547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 378453499 and 378453508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378453557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278006 + ... + 279363.

It is an arithmetic number, because the mean of its divisors is an integer number (54622260).

Almost surely, 2^378453551 is an apocalyptic number.

378453551 is a deficient number, since it is larger than the sum of its proper divisors (58524529).

378453551 is an equidigital number, since it uses as much as digits as its factorization.

378453551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557473.

The product of its digits is 252000, while the sum is 41.

The square root of 378453551 is about 19453.8826715903. The cubic root of 378453551 is about 723.3317494969.

The spelling of 378453551 in words is "three hundred seventy-eight million, four hundred fifty-three thousand, five hundred fifty-one".