1051978634 has 8 divisors (see below), whose sum is σ = 1803391968. Its totient is φ = 450847980.

The previous prime is 1051978633. The next prime is 1051978661. The reversal of 1051978634 is 4368791501.

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

It is a super-2 number, since 2×1051978634² = 2213318092785011912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1051978633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37570652 + ... + 37570679.

It is an arithmetic number, because the mean of its divisors is an integer number (225423996).

Almost surely, 2^1051978634 is an apocalyptic number.

1051978634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1051978634 is a deficient number, since it is larger than the sum of its proper divisors (751413334).

1051978634 is an equidigital number, since it uses as much as digits as its factorization.

1051978634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75141340.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 1051978634 is about 32434.2201077812. The cubic root of 1051978634 is about 1017.0343931567.

The spelling of 1051978634 in words is "one billion, fifty-one million, nine hundred seventy-eight thousand, six hundred thirty-four".