1964901394 has 4 divisors (see below), whose sum is σ = 2947352094. Its totient is φ = 982450696.

The previous prime is 1964901377. The next prime is 1964901401. The reversal of 1964901394 is 4931094691.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1959213169 + 5688225 = 44263^2 + 2385^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491225347 + ... + 491225350.

Almost surely, 2^1964901394 is an apocalyptic number.

1964901394 is a deficient number, since it is larger than the sum of its proper divisors (982450700).

1964901394 is an equidigital number, since it uses as much as digits as its factorization.

1964901394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982450699.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 1964901394 is about 44327.2082811449. The cubic root of 1964901394 is about 1252.5072649223.

The spelling of 1964901394 in words is "one billion, nine hundred sixty-four million, nine hundred one thousand, three hundred ninety-four".